As the nation grew and new states were added to the union, what challenges did this present regarding slavery?

Which legal case forced the university of maryland to admit an african american student to its law school?

Why was the cumberland gap a good place for a trail

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.