Complex sentence: Pico and Frémont signed the Treaty of Cahuenga which ended the U.S.-Mexican fighting in California was signed at Tomás Feliz's adobe house at Campo de Cahuenga on on today's Lankershim Boulevard in January 1847.
Split into simpler sentences: Pico and Frémont signed the Treaty of Cahuenga, which ended the U.S.-Mexican fighting in California. It was signed at Tomás Feliz's adobe house at Campo de Cahuenga on today's Lankershim Boulevard in January 1847.