We only got into it by being dragged into it by Hitler's obsession with destroying Great Britain,
Great Britain declared war on Germany for invading Poland. Germany invaded Poland to reclaim territory that had been part of Germany prior to WW1 and still occupied by ethnic Germans.
It was Churchill's decision that involved the U.S.A. in the war in Europe during WW2.
You're absolutely right about GB declaring war on Germany over the occupation of Poland, but there were other alliances that assisted that declaration. It wasn't just the Polish issue.
While it was most certainly Churchill's desire for America to enter he war (which the US strongly resisted), it wasn't until we started being targeted that the US decided, not Churchill, for us to enter the war. Churchill's angst about the US refusing to enter the war has been well documented.
Ed
