I think your answer is Concurring opinion (Hope I helped!❤️)
Lincoln went public with the preliminary Emancipation Proclamation, which called on all Confederate states to rejoin the Union within 100 days—by January 1, 1863—or their slaves would be declared “thenceforward, and forever free.
Hope this helps :)
In the US I assume? Taxation without representation is always a classic.
Because they just wanted land, they weren’t interested in learning about the people there, they just wanted to conquer new “untouched” lands.