For what reasons did Americans move west?

What role did the catholic church play in the development of the heliocentric theory promoted by copernicus and galileo?

What is constantinoples government?

Kublai khan honored his mongol heritage by: a)marring only one wife b)praying facing mecca five times a day c)slaughtering ten chinese officials every year d)building a large enclosed hunting ground at shangdu,his summer palace