USA HISTORY

Detailed explanation-1: -The ancestors of the American Indians were nomadic hunters of northeast Asia who migrated over the Bering Strait land bridge into North America probably during the last glacial period (11, 500–30, 000 years ago). By c. 10, 000 bc they had occupied much of North, Central, and South America.

Detailed explanation-2: -In the 1970s, college students in archaeology such as myself learned that the first human beings to arrive in North America had come over a land bridge from Asia and Siberia approximately 13, 000 to 13, 500 years ago. These people, the first North Americans, were known collectively as Clovis people.

Detailed explanation-3: -Before Columbus We know now that Columbus was among the last explorers to reach the Americas, not the first. Five hundred years before Columbus, a daring band of Vikings led by Leif Eriksson set foot in North America and established a settlement.

Detailed explanation-4: -Immigration to the United States from India started in the early 19th century when Indian immigrants began settling in communities along the West Coast. Although they originally arrived in small numbers, new opportunities arose in middle of the 20th century, and the population grew larger in following decades.

Detailed explanation-5: -The results support the general view that the ancestry of the American Indian is predominantly Mongoloid. Using 30, 000 years as the separation time between the American Indian and Mongoloid, the divergence time between the three major races of man was estimated to be 33, 000-92, 000 years.