Which factor contributed to the collapse of both the Roman Empire and the Han dynasty

The factor that contributed to the collapse of both the Roman Empire and the Han Dynasty is that wars with invaders from neighboring lands weakened both empires. The Han Dynasty declined due to internal political disputes among people in power and rebellion form peasants that were tired of heavy taxation.

Explanation:

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.