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early explorers used the ground or a hole in the ground.
From Europe the Atlantic Ocean was the route used.
Atlantic
an early exploration route
Ships were - and still are - used to travel to the continent.
Shipping & Trading
It is used to link the great lakes to the Atlantic ocean
Pacific, as used here, means peaceful. The explorers noticed how calm this ocean was in comparison to the others.
They used compasses , sea jornals, telescopes, and maps.
Cartography - is the creation of maps. Early explorers drew charts of their journey - and made extensive notes, Subsequent explorers used those diagrams and notes to follow the same route.
Early European explorers used a combination of existing technologies developed by other cultures, such as compasses and astrolabes from the Arab world, and advancements in ship design made by the Chinese. They also relied on knowledge passed down from previous explorers and navigators, as well as support from their respective monarchies and financial backers for funding expeditions.
Early explorers of Antarctica used sleeping bags made of deer skin.