Explain how the Roman republic worked. Who did the most to make the republic fall and why?

rivalry between senate and the emperor

Explanation: the senate wanted the empire to run like a democratic republic while the emperors wanted power for themselves which resulted in inefficency alowing germanic tribes to destroy the empire as toward the end of rome the roman military was heavily reliant on germanic troops.

post the grid otherwise i cant .

also it sounds like a math question not history.

answer; i believe that the correct answer is,lies(political rhetoric);