Complex sentence: The Battle of Arroyo Grande (December 6,1842) was a battle of the Uruguayan Civil War, in which the federal forces, or "blancos", of Manuel Oribe defeated the "colorados" of Fructuoso Rivera.
Split into simpler sentences: The Battle of Arroyo Grande (December 6,1842) was a battle of the Uruguayan Civil War. At Arroyo Grando, the federal forces, or "blancos", of Manuel Oribe defeated the "colorados" of Fructuoso Rivera.