To determine the estimated total population of Native Americans in North America when Columbus arrived, we can consider historical and archaeological evidence, as well as the context of the question.
1. Consider the options:
- 500,000
- 1 million
- 4 million
- 15 million
2. Historical context:
- Historical records and archaeological findings suggest varying estimates for the Native American population in North America around the time of Columbus’ arrival.
3. Evaluate the options based on evidence:
- The estimate of 4 million is supported by several historical studies and is considered a widely accepted approximation among scholars.
Therefore, the estimated total population of Native Americans in North America when Columbus arrived is closest to 4 million.