The Spanish language has been present in the United States since this nation began its formation. The imperialistic nature of Spanish politics during the fifteenth, sixteenth, and seventeenth centuries motivated many conquerors and explorers such as Juan Ponce de Leon, Panfilo de Narvaez, Alonso de Pineda, and Juan Rodríguez Cabrillo to set their expansionist goals on the land northwest of the Caribbean islands. With their view came their language, and as they were able to create settlements and colonies, Spanish represented the vehicle that would guarantee communication with the official government and among themselves for centuries. The Spanish language and culture became a part of the people and territories that had been explored and colonized. Later, the incorporation of Mexican territories into the union of states in 1848, and the immigration waves of the 1900s enhanced the presence of the Spanish language in the United States.