You need to make it clearer so that I can answer, because all I can see is a bunch of lines
Answer:
I think it is B
Explanation:
Southern states that seceded immediately after Lincoln's election in 1860 did so because they had already been planning it in the event of a Republican victory. Their motivation involved what they perceived as a threat to the institution of slavery, which their economy was dependent upon.
In the 1950's, Communism was a big no-no, so when Communist North Korea invade South Korea the United Nations responded by sending financial aid to South Korean defenders and it began to think about sending troops to fight off the Commies.
B) The united states and the soviet union became the world's two most powerful states, leading to a global struggle between democracy and communism
After WW2 ended, the cold war begun, which was the race against the democratic powers the communist powers. This resulted in many proxy wars and was one of the biggest outcomes of WW2.
I hope this helps! :)
1. disease brought by colonists was a major factor. Kills millions
2. violent conflicts between the colonists and/or British forces against the natives
3. The westward expansion (there's a special name for it) Colonists kept colonizing deeper and deeper into the mainland until reaching the western sea coast. killing 10's of thousands on the way there
*millions died, possible around 10 mill