Question: The date of the start of the history of the United States is a subject of debate among historians, in recent decades American schools and universities typically have shifted back in time to include more on the colonial period and much more on the prehistory of the Native Americans, the history of Native Americans in the United States began in ancient times tens of thousands of years ago with the settlement of the Americas by who?
Sentence (from "History of the United States"): Older textbooks start with the arrival of Christopher Columbus on October 12, 1492 and emphasize the European background of the colonization of the Americas, or they start around 1600 and emphasize the American frontier.
Relevant evidence: No