I want to know the answer to the following question:
Manuel Oribe and Fructuoso Rivera fought against what empire?
All the background I'm provided with is that "Uruguay's 1830s were dominated by the confrontation between Manuel Oribe and Fructuoso Rivera, the two revolutionary leaders who had fought against the Empire of Brazil under the command of Lavalleja, each of whom had become the caudillo of their respective faction.". Is that enough to answer the question?
Answer: yes