The US Joined efforts in WW1 on <span>April 6, 1917</span>
When working on a major project, brainstorming topic ideas is not a good step for keeping the overall scope in mind
Before being allowed to re-join the Union, Confederate states where required to ratify the 14th Amendment. This Amendment protected citizens from racist laws.
I believe it is the Albany Plan of Union
The Mexican American War heightened tensions over slavery in that there were many disagreements over whether the new territories won from Mexico should be free or slave territories. The Wilmot Proviso, created to solve the problem, ended up slitting parties on regional areas.
Good luck :)