What was exchanged in the columbian exchange

1.who controls fascism government? 2.who controls communism gov? 3. how do they stay in power

What did president roosevelt do to aid panama in becoming an independent country? a. he negotiated a peace treaty with nicaragua to purchase the land. b. he invaded colombia to establish a us base for defense. c. he placed warships around panama to block sea lanes. d. he used dollar diplomacy to block imports to nicaragua.

An addition to jews , a specific group that the nazis systematically killed during the holocaust was