There was tension in the politics of the nation which were largely due to differences in the economies of the North and the South. For the South, slavery was used as a labor source hence they supported slavery. The North on the other hand was opposed to slavery as it was largely urbanized. Different regions led to the creations of different economies.
Because back In the day there was slavery and they thought that should still be a thing so they started killing and torturing black!?!?
Answer:
truman doctrine is the principle that the US should give support to countries or people's threatened by Soviet forces or Communist insurrection. The invasion of South Korea made Truman genuinely fearful that the Soviet union and China intended to expand the sphere of communism throughout Asia.