Complex sentence: In 1838, during the government of Buenos Aires Province Governor Juan Manuel de Rosas, Martín García was also attacked by Anglo-French forces, and later occupied by allied forces composed of Unitarian Party exiles in Montevideo.
Split into simpler sentences: In 1838, during the government of Buenos Aires Province Governor Juan Manuel de Rosas, Martín García was also attacked by Anglo-French forces. Later it was occupied by allied forces composed of Unitarian Party exiles in Montevideo.