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MEXICAN HISTORY I (FIRST PERIOD)

By FLOREZZZ
  • Southern Route Theory
    68,000 BCE

    Southern Route Theory

    What it says: The first Homo sapiens leaving Africa went through the Arabian Peninsula and along the Indian Ocean islands, reaching Australia earlier than Europe. Evidence: Human remains in Australia (~50,000 years old) support this route.
  • THEORY OF AFRICA MOVING
    60,000 BCE

    THEORY OF AFRICA MOVING

    Expansion: They spread into the Middle East, then into Asia, Europe, Australia, and eventually the Americas. Replacement: As they expanded, they gradually replaced other human species like the Neanderthals and Homo erectus, though there was some interbreeding (we know this from DNA evidence).
  • Land Bridge Theory (Beringia)
    18,000 BCE

    Land Bridge Theory (Beringia)

    During the Ice Age, sea levels dropped and a land bridge (Beringia) appeared between Siberia (Asia) and Alaska (North America). Result: Humans walked into the Americas.
  • Coastal Migration Theory
    14,000 BCE

    Coastal Migration Theory

    Instead of only using the land bridge, some groups traveled by boat along the Pacific coast, moving from Asia to the Americas. Evidence: Ancient sites in Chile and North America are older than what the land bridge alone can explain.