HELP PLZ it do now

While I can't answer the second because I've forgotten what that is. I can answer the first one.

1. Black people must sit in the back of the bus so they can save the front for white people

2. White people and black people cannot use the same things. (Water fountains, bathrooms, etc.)

3. In some states, white people and black people could not marry each other due to Jim Crow laws.

Basically Jim Crow laws segregated African-Americans.

answer; by working independently, the states have a high likelihood of developing innovative solutions that can be employed in other states;

answer; ///(positive correlation);