thumb|Umatac in 1846 During the course of the Spanish administration of Guam, lower birth rates and diseases reduced the population from 12,000 to roughly 5,000 by 1741. After 1695, Chamorus settled in five villages: Hagåtña, Agat, Umatac, Pago, and Fena. During this historical period, Spanish language and customs were introduced in the island and Catholicism became the predominant religion. The Spanish built infrastructures such as roads and ports, as well as schools and hospitals. Spanish and Filipinos, mostly men, increasingly intermarried with the Chamorus, particularly the new cultured or "high" people (manak'kilo) or gentry of the towns. In 1740, Chamorus of the Northern Mariana Islands, except Rota, were moved from some of their home islands to Guam.
thumb|Umatac in 1846 During the course of the Spanish a,dministration of Guam, lowe?r birth rates and diseases reduced the population from 12,000 to roughly 5,000 by 1741. After 1695, Chamorus settled in five villages: Hagåtña, Agat, Umatac, Pago, and Fena. During this historical period, Spanish language and customs were introduced in the island and Catholicism became the predominant religion. The Spanish built infrastructures such as roads and ports, as well as schools and hospitals. Spanish and Filipinos, mostly men, increasingly intermarried with the Chamorus, particularly the new cultured or "high" people (manak'kilo) or gentry of the towns. In 1740, Chamorus of the Northern Mariana Islands, except Rota, were moved from some of their home islands to Guam.