Which two great emperors strengthened the Roman Empire

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

Which government entity is given the task of initiating articles of impeachment against the president when the need arises

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.