Possibly false but I’m kinda not smart so my answer might be false
Destroyed many cities and most fields in France due to the extreme artillery
The different branches of the government help limit the power of the federal government because there are checks and balances with each branch and if one branch doesn't quite agree with the executive branch then the two other branches can overrule the president's power.
Because the war in Europe was in a lot of Allied countries, for example France. They wanted to focus on the enemies that were at their front door first and posed the most imminent threat over Japan which was on the other side of the globe.