Answer:
This took place because people moved to the urban areas in search of jobs that were avavailablealuble.
Enslaved Africans resisted, or rebelled, against their position as slaves in many different ways. Each expression of resistance by enslaved individuals or groups counted as acts of rebellion against the system of slavery. The many instances of resistance show that slaves were not passive victims of slavery. Instead they proved their strength and determination in fighting for their freedom. In particular, enslaved Africans on the Caribbean plantations rebelled against their owners in many different ways.
Link to: This can be read about further in Black Resistance.
He was the leader of the Sioux who defeated Gen. Custer at Wounded Knee
A. because Southern congressmen who were for slavery did not want another free state