Which group took americans hostage in 1979

Rivalries between european imperialist powers and the growth of european militaries contributed to which outcome in the early 20th century? o a. many european powers were eager to go to war with one another. o b. european states became less concerned about controlling overseas empires. o c. small countries became more willing to join powerful empires. o d. the alliance system that maintained a balance of power in europe broke down.

Why did river valleys most farming impact the lives of neolithic peoples?

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?