Complex sentence: In January 1574, Salcedo returned to the capital of his encomienda, Vigan, bringing with him some Augustinian missionaries to pioneer the evangelization of Ylocos and established a Spanish city, for the purpose of controlling the neighboring country.
Split into simpler sentences: In January 1574, Salcedo returned to the capital of his encomienda, Vigan, bringing with him some Augustinian missionaries to pioneer the evangelization of Ylocos. He established a Spanish city for the purpose of controlling the neighboring country.