Пожалуйста напишите кто такие коренные Американцы(кратко,если можно, то на английском)

US territory was inhabited by the Indians from ancient times. The ancestors of the Indians migrated to America from North-East Asia.  In the North America there were about 400 of Indian tribes. They all spoke different languages and had no written language.  All clothes of men and women were made of dressed bison skins. Men and women were decorated with porcupine needles.  The Indians were engaged in hunting, gathering, agriculture. Northern Indians hunted sea mammals. After Europeans came to the continent the Indians began to keep horses and with guns made hunting for bison easier and faster. Indians grew crops and raised animals such as Turkey and Guinea pig.