Lincoln and the minority of the congress were republics. When the south withdrew Johnson was the only southern democrat to stay in congress. Because most there republicans Johnson had trouble the administration.
The Senate refused to ratify the treaty of Versailles primarily because they objected to the League of Nations. If the US joined the League, then they would be obligated to fight in future wars and the Senate didn't want that.
The answers are B, C, and D
Both are used during the process of synthesizing evidence.
