Geronimo (Mescalero-Chiricahua:Goyaałé [kòjàːɬɛ́] "the one who yawns"; June 16, 1829 – February 17, 1909) was a prominent leader from the Bedonkohe band of the Chiricahua Apache tribe. From 1850 to 1886 Geronimo joined with members of three other Chiricahua Apache bands—the Chihenne, the Chokonen and the Nednhi—to carry out numerous raids as well as resistance to US and Mexican military campaigns in the northern Mexico states of Chihuahua and Sonora, and in the southwestern American territories of New Mexico and Arizona. Geronimo's raids and related combat actions were a part of the prolonged period of the Apache-American conflict, that started with American settlement in Apache lands following the end of the war with Mexico in 1848. The Apache-American conflict was itself a direct outgrowth of the much older Apache-Mexican conflict which had been ongoing in the same general area since the beginning of Mexican/Spanish settlement in the 1600s.