The answer should be D. Hope that helps?
Portugal. this is also the reason portugese is spoken in brazil
The Mongols, a tribe of Nomads from Central or North Asia, who were ruled by Genghis Khan at the time.
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust.
