What was one major outcome of the invasion of poland 1939

One major outcome was that Poland became divided between Nazi Germany and the Soviet Union.

The major outcome of the invasion of Poland in 1939 was that it started World War II.

Explanation:

The German invasion of Poland was a military action of Nazi Germany aimed at annexing the Polish territory. The operation began on September 1, 1939 and the last units of the Polish army surrendered on October 6 of that same year. It was the trigger of World War II in Europe and ended with the Second Polish Republic.

The fall of Poland would be accelerated by the subsequent invasion by the Soviet Union on September 17 and the absence of aid from its allies, the United Kingdom and France.