<Tr> <Th> Main immigrant languages </Th> <Td> English, Spanish, Chinese, French, Tagalog, Vietnamese, Arabic, Korean, </Td> </Tr> <Tr> <Th> Sign languages </Th> <Td> American Sign Language (BASL), Hawai'i Sign Language, Keresan Sign Language, Navajo Family Sign, Plains Indian Sign Language, Puerto Rican Sign Language, Samoan Sign Language </Td> </Tr> <Tr> <Th> Common keyboard layouts </Th> <Td> QWERTYUIOP </Td> </Tr> <P> Many languages in the United States are used, or historically have been used . Over 500 languages are spoken at various levels by the U.S. population . The most commonly used language is English (specifically American English), which is the de facto national language of the United States . Since the 1965 Immigration Act, Spanish is the second most common language in the country . The state government of Louisiana offers services and documents in French, as does New Mexico in Spanish . There are many languages indigenous to North America or to U.S. states or holdings in the Pacific region . Hawaiian, although having few native speakers, is an official language along with English at the state level in Hawaii . Alaska recognizes twenty Native languages as official . </P>

When was english declared the official language of the united states