What was the Abbasid Caliphate and why was it important?

What crime was king louis xvi accused of, what happened to him as a result?

How did modern american history begin with “contact”?

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.