The continent of North America has been inhabited by humans for at least 16,500 years. As early as the 1500s, scientist and theorists were interested in discovering how humans had come to populated North and South America. The theory suggested the migration of Norsemen across Greenland into North America. The other theory proposed the
The continent of North America has been inhabited by humans for at least 16,500 years. As early as the 1500s, scientist and theorists were interested in discovering how humans had come to populated North and South America. The theory suggested the migration of Norsemen across Greenland into North America. The other theory proposed the