Complex sentence: His courage and compassion in the war of San Diego Pond won him great respect among the Comanches, Utes and Apaches and, therefore, he could have peaceful relations with nomadic tribes in the province.
Split into simpler sentences: His courage and compassion in the war of San Diego Pond won him great respect among the Comanches, Utes and Apaches. Because of this, he was able to have peaceful relations with nomadic tribes in the province.