What is a amendment? and how many are there?

Where were the trials to review evidence in cases against high-ranking nazi officials accused of war crimes held?

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.

Why is james madison significant in regards to the bill of rights?