How might the habitat of people in a culture are affected their characteristics

Many thousands of years before Christopher Columbus' ships landed in the Bahamas, a different group of people discovered America: the nomadic ancestors of modern Native Americans who hiked over a "land bridge" from Asia to what is now Alaska more than 12,000 years ago. In fact, by the time European adventurers arrived in the 15th century A. D., scholars estimate that more than 50 million people were already living in the Americas