What language did the ancient natives speak?

Answer 1

Native peoples from Alaska to the southern tip of South America spoke thousands of different languages, many of them extinct today. It is wrong to think that all native American peoples spoke the same language. Even among the Plains tribes of North America every tribe spoke its own language; this is the reason for the development of the Plains sign language, which permitted a Cheyenne warrior to hold a long conversation with a Lakota or Arapaho warrior, even at a distance from each other.
yes
The Native Americans spoke more than 700 languages. The language a Native American spoke depended on the tribe they were a member of and other tribes they would have contact with.
They spoke hundreds of American languages, some of the more prominent languages include:

With millions of speakers

Nahuatl the language of the Aztecs, still a few million speakers in Mexico), Yucatec and Quiche Mayan (the two largest dialects of the Mayan language family), Aymara (an official language of Bolivia) and Quechua (the language of the Incas, an official language of Bolivia and official in parts of Peru where most people speak it)

The most prominent indigenous American language is the Guaraní of Paraguay, which is the most common language in the country, with 4 million speakers (although most people in the country are also to some extent bilingual). Quechua (8 or so million) has more speakers but is in a more precarious situation. Guaraní is also official in the Corrientes province of Argentina.

With hundreds of thousands of speakers

Inuit (the language of the "Eskimos"), Cree(spoken in northern Quebec and throughout southern Canada), Navajo (in New Mexico, Utah and Arizona), Tupí (was imposed by the Portuguese in Brazil but later it was replaced by Portuguese), Guajira (of Venezuela and Colombia) and Garifuña (a language spoken by mixed West African, Carib and Arawak people in Central America).
There is no one specific language, because they spoke many different languages. Each tribe had a different language or dialect. The Sioux had many tribes within them, and they couldn't always understand each other. The Plains Indians had different languages too, but they may have had a sort of rough sign language they used between tribes to communicate.

Answer 2

Which ancient natives??