What were the items traded in the Columbian Exchange ?

What was the land that george calvert asked charles 1 used for

Idont want to fail what happened in iraq most immediately after saddam hussein was removed from power? a. the new government used chemical weapons against civilians. b. isis declared the formation of the islamic state. c. *** iraqi refugees fled to neighboring countries. d. civil war broke out between different ethnic and religious groups.

The soviet union and the united states believed in two very different economic systems. what were the names of each?