Question: What river in south Central America saw a battle fought on its right bank on 19 December 1810
Sentence (from "Battle of Campichuelo"): The Battle of Campichuelo was a battle fought on 19 December 1810 between revolutionary forces led by Manuel Belgrano and Royalist troops on the right bank of the Paraná River, part of the Paraguay campaign of the Argentine War of Independence.
Relevant evidence: Yes