PLS ANSWER How did enemy invasions affect the Western Roman Empire?

The defensive walls started to crumble because of attacks.
The military began to weaken because of attacks.
The region began to have more cultural diversity.
Western Rome began having communication failures with its capital.

Which of these best describes the function of a "super pac"? a)create bi-partisan legislation that can become law b)organization meant to reign-in spending of political candidates during election cycles c)promote the interests of supreme court justices without breaking specific tampering laws d)raise funds through donations from corporations or individuals to support or oppose specific political candidates