A. South Asia, Australia, Europe, the Americas
The main reason the Roman Republic failed is that it was never a democracy. The rich had undue influence in the electoral process. The various generals like Marius, Sulla, Pompey and Caesar were much more popular. There was also increasingly instability, many civil wars. And everywhere outside of Italy was governed as a province, with a Governor imposed by Rome. Most actual inhabitants were excluded from the workings of the Republic.
Answer:
Courts, or Tribunales
Explanation:
I just said it in spanish so not to worry. Although, the courts such as the supreme court, and all of the lower classes of courts control the civil rights and as they protect it.