The Acoma suffered high mortality from smallpox epidemics, as they had no immunity to such Eurasian infectious diseases. They also suffered raiding from the Apache, Comanche, and Ute. On occasion, the Acoma would side with the Spanish to fight against these nomadic tribes. Forced to formally adopt Catholicism, the Acoma proceeded to practice their traditional religion in secrecy, and combined elements of both in a syncretic blend. Intermarriage and interaction became common among the Acoma, other pueblos, and Hispanic villages. These communities would intermingle in a kind of creolization to form the culture of New Mexico.