Final answer:
Early humans crossed oceans using rafts, coastal hopping, land bridges, and celestial navigation.
Step-by-step explanation:
Early humans crossed oceans in the past using various techniques and advancements in navigation and seafaring abilities. Some examples include:
- Rafts and boats: Humans would have used simple rafts or dugout canoes to navigate short distances across rivers or shallow seas.
- Coastal hopping: Early humans likely followed the coastlines, using familiar landmarks and natural features as navigation aids, gradually expanding their range.
- Land bridges: During periods of lower sea levels, land bridges would have formed, connecting different landmasses. Humans could have used these connections to cross over to new territories.
- Celestial navigation: By observing the stars and using rudimentary instruments, early humans could have determined their direction and position relative to the stars and landforms.
It's important to note that the exact methods early humans used to cross oceans remain speculative and subject to ongoing research and discovery.
Learn more about Methods of early human ocean crossings