How did feudalism answer the problems raised by the fall of the roman empire?

Which of the following is a claim about ancient rome that a historian could build san argument around

Summarize how the changes in the u.s ecomony during world war ii affected african-americans and mexican farmworkers

In a short paragraph, describe the transition of rome from a republic to an empire. what was the republic like, and what caused it to become an empire?i have to turn this in tomorrow it would be greatly appreciated