Why is it considered that WW2 started on September 1, 1939 and not July 7, 1937?

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Looking at wiki dates given are 1 September 1939 – 2 September 1945, which end in the defeat of Japan.



However why starting date is when Germans invaded Poland and not when the Japanese invaded China in Sino-Japanese war on July 7, 1937, which then ends on 2 September 1945 (same) date as WW2?



Why is it considered that WW2 started on September 1, 1939 and not July 7, 1937?










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  • I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
    – sempaiscuba♦
    9 mins ago














up vote
1
down vote

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Looking at wiki dates given are 1 September 1939 – 2 September 1945, which end in the defeat of Japan.



However why starting date is when Germans invaded Poland and not when the Japanese invaded China in Sino-Japanese war on July 7, 1937, which then ends on 2 September 1945 (same) date as WW2?



Why is it considered that WW2 started on September 1, 1939 and not July 7, 1937?










share|improve this question





















  • I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
    – sempaiscuba♦
    9 mins ago












up vote
1
down vote

favorite









up vote
1
down vote

favorite











Looking at wiki dates given are 1 September 1939 – 2 September 1945, which end in the defeat of Japan.



However why starting date is when Germans invaded Poland and not when the Japanese invaded China in Sino-Japanese war on July 7, 1937, which then ends on 2 September 1945 (same) date as WW2?



Why is it considered that WW2 started on September 1, 1939 and not July 7, 1937?










share|improve this question













Looking at wiki dates given are 1 September 1939 – 2 September 1945, which end in the defeat of Japan.



However why starting date is when Germans invaded Poland and not when the Japanese invaded China in Sino-Japanese war on July 7, 1937, which then ends on 2 September 1945 (same) date as WW2?



Why is it considered that WW2 started on September 1, 1939 and not July 7, 1937?







world-war-two europe asia sino-japanese-war






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asked 40 mins ago









Matas Vaitkevicius

1728




1728











  • I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
    – sempaiscuba♦
    9 mins ago
















  • I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
    – sempaiscuba♦
    9 mins ago















I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
– sempaiscuba♦
9 mins ago




I remember seeing an American textbook in the 1970s which gave the dates of WW2 as 7 December 1941 to 2 September 1945! I guess it's also sometimes a matter of perspective.
– sempaiscuba♦
9 mins ago










3 Answers
3






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2
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Actually, good arguments can be put forward for both dates as the the 'start' of World War 2. In fact a number of other dates have also been suggested for the 'start' of World War 2, including:




  • Japan seizing Manchuria from China in 1931.


  • Italy’s invasion and defeat of Abyssinia (Ethiopia) in 1935

  • Adolf Hitler’s re-militarization of Germany’s Rhineland in 1936

  • The Spanish Civil War (1936–1939)

  • Germany’s occupation of Czechoslovakia in 1938

One can even argue that the Second World War was simply a continuation of the First World War that had formally ended with the Treaty of Versailles in 1919!




However, it is generally accepted that the German invasion of Poland marked the date when the war became a truly global World War. A war that would continue until the war ended with Japan’s surrender in September 1945.






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    1
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    As the World War II Article says:




    Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937[5][b]—though neither side had declared war on the other. World war is generally said to have begun on 1 September 1939,[6] with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom.





    So, formal declarations occurred at the later date, and gathered more directly attacking sides, enough to call it a "World War", where before it was China + Soviets + USA vs. Japan.






    share|improve this answer



























      up vote
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      down vote













      That's a good question. I can't get into the minds of the consensus, but chronologically the Axis powers, including Imperial Japan, weren't formed until a year later on 27 September 1940 with the Tripartite Pact. Until then, Nazi Germany and the Soviet Russia were the aggressors, while Japan was just a country outside the European political sphere having an unrelated regional war. Two nations didn't attack as an alliance until Germany and Russia invaded Poland under the Molotov–Ribbentrop Pact signed in 23 August 1939. All other related aggressive actions before then were by a single country, thus not a "World War."






      share|improve this answer






















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        3 Answers
        3






        active

        oldest

        votes








        3 Answers
        3






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes








        up vote
        2
        down vote













        Actually, good arguments can be put forward for both dates as the the 'start' of World War 2. In fact a number of other dates have also been suggested for the 'start' of World War 2, including:




        • Japan seizing Manchuria from China in 1931.


        • Italy’s invasion and defeat of Abyssinia (Ethiopia) in 1935

        • Adolf Hitler’s re-militarization of Germany’s Rhineland in 1936

        • The Spanish Civil War (1936–1939)

        • Germany’s occupation of Czechoslovakia in 1938

        One can even argue that the Second World War was simply a continuation of the First World War that had formally ended with the Treaty of Versailles in 1919!




        However, it is generally accepted that the German invasion of Poland marked the date when the war became a truly global World War. A war that would continue until the war ended with Japan’s surrender in September 1945.






        share|improve this answer


























          up vote
          2
          down vote













          Actually, good arguments can be put forward for both dates as the the 'start' of World War 2. In fact a number of other dates have also been suggested for the 'start' of World War 2, including:




          • Japan seizing Manchuria from China in 1931.


          • Italy’s invasion and defeat of Abyssinia (Ethiopia) in 1935

          • Adolf Hitler’s re-militarization of Germany’s Rhineland in 1936

          • The Spanish Civil War (1936–1939)

          • Germany’s occupation of Czechoslovakia in 1938

          One can even argue that the Second World War was simply a continuation of the First World War that had formally ended with the Treaty of Versailles in 1919!




          However, it is generally accepted that the German invasion of Poland marked the date when the war became a truly global World War. A war that would continue until the war ended with Japan’s surrender in September 1945.






          share|improve this answer
























            up vote
            2
            down vote










            up vote
            2
            down vote









            Actually, good arguments can be put forward for both dates as the the 'start' of World War 2. In fact a number of other dates have also been suggested for the 'start' of World War 2, including:




            • Japan seizing Manchuria from China in 1931.


            • Italy’s invasion and defeat of Abyssinia (Ethiopia) in 1935

            • Adolf Hitler’s re-militarization of Germany’s Rhineland in 1936

            • The Spanish Civil War (1936–1939)

            • Germany’s occupation of Czechoslovakia in 1938

            One can even argue that the Second World War was simply a continuation of the First World War that had formally ended with the Treaty of Versailles in 1919!




            However, it is generally accepted that the German invasion of Poland marked the date when the war became a truly global World War. A war that would continue until the war ended with Japan’s surrender in September 1945.






            share|improve this answer














            Actually, good arguments can be put forward for both dates as the the 'start' of World War 2. In fact a number of other dates have also been suggested for the 'start' of World War 2, including:




            • Japan seizing Manchuria from China in 1931.


            • Italy’s invasion and defeat of Abyssinia (Ethiopia) in 1935

            • Adolf Hitler’s re-militarization of Germany’s Rhineland in 1936

            • The Spanish Civil War (1936–1939)

            • Germany’s occupation of Czechoslovakia in 1938

            One can even argue that the Second World War was simply a continuation of the First World War that had formally ended with the Treaty of Versailles in 1919!




            However, it is generally accepted that the German invasion of Poland marked the date when the war became a truly global World War. A war that would continue until the war ended with Japan’s surrender in September 1945.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited 21 mins ago

























            answered 29 mins ago









            sempaiscuba♦

            43.5k4152194




            43.5k4152194




















                up vote
                1
                down vote













                As the World War II Article says:




                Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937[5][b]—though neither side had declared war on the other. World war is generally said to have begun on 1 September 1939,[6] with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom.





                So, formal declarations occurred at the later date, and gathered more directly attacking sides, enough to call it a "World War", where before it was China + Soviets + USA vs. Japan.






                share|improve this answer
























                  up vote
                  1
                  down vote













                  As the World War II Article says:




                  Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937[5][b]—though neither side had declared war on the other. World war is generally said to have begun on 1 September 1939,[6] with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom.





                  So, formal declarations occurred at the later date, and gathered more directly attacking sides, enough to call it a "World War", where before it was China + Soviets + USA vs. Japan.






                  share|improve this answer






















                    up vote
                    1
                    down vote










                    up vote
                    1
                    down vote









                    As the World War II Article says:




                    Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937[5][b]—though neither side had declared war on the other. World war is generally said to have begun on 1 September 1939,[6] with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom.





                    So, formal declarations occurred at the later date, and gathered more directly attacking sides, enough to call it a "World War", where before it was China + Soviets + USA vs. Japan.






                    share|improve this answer












                    As the World War II Article says:




                    Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937[5][b]—though neither side had declared war on the other. World war is generally said to have begun on 1 September 1939,[6] with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom.





                    So, formal declarations occurred at the later date, and gathered more directly attacking sides, enough to call it a "World War", where before it was China + Soviets + USA vs. Japan.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 30 mins ago









                    Malandy

                    654617




                    654617




















                        up vote
                        0
                        down vote













                        That's a good question. I can't get into the minds of the consensus, but chronologically the Axis powers, including Imperial Japan, weren't formed until a year later on 27 September 1940 with the Tripartite Pact. Until then, Nazi Germany and the Soviet Russia were the aggressors, while Japan was just a country outside the European political sphere having an unrelated regional war. Two nations didn't attack as an alliance until Germany and Russia invaded Poland under the Molotov–Ribbentrop Pact signed in 23 August 1939. All other related aggressive actions before then were by a single country, thus not a "World War."






                        share|improve this answer


























                          up vote
                          0
                          down vote













                          That's a good question. I can't get into the minds of the consensus, but chronologically the Axis powers, including Imperial Japan, weren't formed until a year later on 27 September 1940 with the Tripartite Pact. Until then, Nazi Germany and the Soviet Russia were the aggressors, while Japan was just a country outside the European political sphere having an unrelated regional war. Two nations didn't attack as an alliance until Germany and Russia invaded Poland under the Molotov–Ribbentrop Pact signed in 23 August 1939. All other related aggressive actions before then were by a single country, thus not a "World War."






                          share|improve this answer
























                            up vote
                            0
                            down vote










                            up vote
                            0
                            down vote









                            That's a good question. I can't get into the minds of the consensus, but chronologically the Axis powers, including Imperial Japan, weren't formed until a year later on 27 September 1940 with the Tripartite Pact. Until then, Nazi Germany and the Soviet Russia were the aggressors, while Japan was just a country outside the European political sphere having an unrelated regional war. Two nations didn't attack as an alliance until Germany and Russia invaded Poland under the Molotov–Ribbentrop Pact signed in 23 August 1939. All other related aggressive actions before then were by a single country, thus not a "World War."






                            share|improve this answer














                            That's a good question. I can't get into the minds of the consensus, but chronologically the Axis powers, including Imperial Japan, weren't formed until a year later on 27 September 1940 with the Tripartite Pact. Until then, Nazi Germany and the Soviet Russia were the aggressors, while Japan was just a country outside the European political sphere having an unrelated regional war. Two nations didn't attack as an alliance until Germany and Russia invaded Poland under the Molotov–Ribbentrop Pact signed in 23 August 1939. All other related aggressive actions before then were by a single country, thus not a "World War."







                            share|improve this answer














                            share|improve this answer



                            share|improve this answer








                            edited 1 min ago

























                            answered 24 mins ago









                            Tombo

                            70119




                            70119



























                                 

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