Final answer:
The migration of humans out of Africa is considered part of prehistory rather than history because it occurred before the development of written records. Archaeological evidence and research have provided insights into human migration patterns and the development of different human species. Our understanding of human migration continues to evolve as new discoveries are made.
Step-by-step explanation:
The migration of humans out of Africa is considered part of prehistory rather than history. Prehistory refers to the period of time before written records were kept, while history refers to the period of time after written records were kept. Since the migration of humans out of Africa occurred before the development of written records, it falls within the realm of prehistory.
Archaeological evidence and research have provided insights into human migration patterns and the development of different human species. For example, Homo sapiens began migrating out of eastern and southern Africa as early as 200,000 years ago. Groups of Homo sapiens left the African continent approximately 100,000 years ago and began a global migration that lasted for tens of thousands of years. This information has been obtained through the study of artifacts, fossils, and genetic data.
Although our understanding of human migration continues to evolve as new discoveries are made, the distinction between prehistory and history is based on the availability of written records and the need to rely on other sources of evidence to understand the past.