Why did spain turn to africa to provide labor for its american colonies

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

Complete these sentences about the babylonian civilization. the babylonians were great supporters of art and architecture. their most well-known achievement in architecture was the . this achievement was a wonder in a land that was mainly made up of deserts and mountains. the is named for one of the most famous rulers of babylon. the citizens of babylon had to follow this collection of rules and laws. the babylonians practiced , but marduk was their main god.

What role did the alliance system play in preventing austria-hungary and serbia from coming to a compromise settlement?