Help please Name two important groups that lived in the Valley of Mexico before the
Aztecs?

What do historians call the political, social, or cultural circumstances surrounding an event?

Which option best completes the diagram? the cold war is the major u. s. foreign policy priority terrorism becomes a major concern of u. s. foreign policy. a. the second iraq war begins. b. the september 11 terrorist attacks occur. c. terrorists attack the 1972 summer olympics. o d. the soviet union collapses.

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.