Which statements correctly define factors that contributed to the decline of the Roman Empire?

Choose all answers that are correct.

Rome could not grow enough food and maintain a large enough army to fend off barbarian tribes.

The empire split into three separate units, each ruled by a consul.

Incompetent rulers placed huge tax burdens on the Roman citizens.

A long period of peace throughout the empire led to a sense of overconfidence in Rome.

I NEED HELP!!!

i think a and c is the answer for this question.

Explanation:

The correct answers are A) The empire split into three separated units, each ruled by a consul and C) Rome could not grow enough food and maintain a large enough army to fend off barbarians.  

Explanation:

The statements that correctly define factors that contributed to the decline of the Roman Empire are The empire split into three separated units, each ruled by a consul and Rome could not grow enough food and maintain a large enough army to fend off barbarians.    

Emperor Diocletian ended the form of government of total monarchy and divided the reign into separated units, each ruled by its own. The Roman Empire could not maintain effective control in its western regions. The inefficacy of its rulers, internal conflicts and the lack of food to properly maintain a large army, and the invasion of Barbarians, were among the reasons of the end of the Roman Empire.