What happened during the columbian exchange?
a. spanish explorers traded food for gold in latin america.
b. columbus returned to the americas six times.
c. plants, animals, diseases, and people moved among continents.
d. thousands of people from the americas migrated to europe.

Two of these describe “federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a “unitary” and a “confederate” system.