What name was given to the mass movement of african americans from the dough to northern cities?

How did rhe transcontinental railroad effected westward migration

What made the settlement of oklahoma territory different from that of other territories

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