On the allied side, the British and Americans played a pivotal role, while the Canadians, Australians and the free french resistance nonetheless had important roles as well. This operation was overseen by Commander Eisenhower. On the German side, field marshals Rundstedt and Rommel oversaw defensive measures on the Normandy beaches.
It's a false legend promoted by today's democratic governments.
In fact democracy in Ancient Greece wasn't how we know it today:
-It was only limited at the city of Athen
-Only adult rich men born in Athen with both the parents citizens of Athen could vote, in fact that was a minority
Most important
-People absolutely didn't like democracy, not who couldn't vote, they didn't care, but philosophers like Plato.
If you want I'll link sources in the comments, now I'm not at home.
Not slave, Kansas is middle north of North America but I do believe it was a free state
Lincoln said this because his ultimate goal was to preserve the Union. Although he detested slavery on moral and economic grounds, he thought that it would eventually die out on its own, if it could be contained where it was.