How did Europeans use race as a way to control or organize their territory?

What makes ijsselmeer different from other landforms in western europe?

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

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