How is the number of electors determined for each state in electing the president?*
A. by the overall population
B. by the date of entry into the union
C. by members of Congress
D. by federal tax contribution

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.