WILL MARK BRAINLIST please help fast
What environmental change allowed people to travel by land between Asia and North America?

A. human adaptation to Arctic environments
B. ice sheets blocking sea routes
C. the formation of ice sheets on land
D. the melting of ice sheets on land

D. The melting of ice sheets on land

Explanation:

answer; ///i believe the correct answer is the empire state building;

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.