Answer:
There are many causes for the fall of the Roman Empire included military weakness which helped barbarians tribes to invade and defeat the empire. Invasion by outnumbered tribes of Huns and Visigoths from northern Europe defeated the Roman soldiers. Over expansion is also the reason for the fall of the Roman Empire. The Roman empire in its period spread across the Atlantic ocean and establish its empire in Britain and several regions which caused economic and military instability by overspending. Another reason for its decline is the political corruption which gave birth to rivalries, to capture the throne and in return lost the trust of its citizens.