The cease-fire that ended the Vietnam War stated that Americans had to return Communist prisoners of war.
Communists had to withdraw their forces from South Vietnam.
both parties had to respect South Vietnam's right to self-determination.
the United States could not add troops to its existing forces in South Vietnam.

Round arches allowed the romans to create structures with

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

What does the timeline above show about the consequences of the persian wars? a. each city-state of greece had equal influence after the wars. b. athens and sparta continued attacking persia after the wars had ended. c. persia continued to dominate greece for years after the wars. d. the alliance between athens and sparta ended shortly after the wars.