Which of the following were factors in the weakening of the Roman Empire?

foreign invaders

corrupt government

not enough land

decrease in trade

internal revolts

collapse of the economy

The main reasons for the collapse of the Roman Empire was foreign invaders, decrease in trade, corrupt government, internal revolts, and collapse of the economy.

Explanation:

Roman Empire was weakened by different reasons that it finally collapsed. The main reasons being overreach of the military, invasion by determined Huns and Visigoths tribes from Central and Northern Europe, inflation (economic decline), corruption in the government and other political reasons. All these factors were linked to each other. Military decline meant less of the people had jobs in military. It resulted in less people wanting to have children. Also, people were suffering from the plague that killed millions in Europe.