How were both enslaved persons and free african americans to act around white people?

In 1819, what did the united states obtain from spain for $5 million?

Which of the following was probably the most difficult challenge facing construction of the railroad?

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.