Question: The Battle of San Roque was part of the Argentine Civil War, the Federalist forces of Córdoba Province governor Juan Bautista Bustos were defeated by which forces of General José María Paz, who were the proponents of the concept of a unitary state (centralized government) in Buenos Aires during the civil wars? 
Sentence (from "Unitarian Party"): Unitarianists or Unitarians (in Spanish, "Unitarios") were the proponents of the concept of a unitary state (centralized government) in Buenos Aires during the civil wars which shortly followed the Declaration of Independence of Argentina in 1816.
Relevant evidence: Yes