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Europe, Africa, and Asia have been known since the beginning of man-kind.

Humans crossed the land bridge from Asia to North America during the Ice Age at least 100,000 years ago. From here they then spread throughout the Americas, finding South America as well. Humans also crossed land bridges into Australia during the Ice Age, or possibly earlier by ships. However, these continents were cut off from the majority of the world (Africa, Europe, and Asia) and vice versa; they had not known of each others existence. North America was founded by Scandinavians about 1,000 years ago. However, this was unknown to the rest of the world. The founding of the Americas is credited to Christopher Columbus, who founded the continents in 1492. Australia was founded by Williem Janszoon in 1606. Antarctica was founded by three men from Russia, the UK, and US in 1820.

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βˆ™ 11y ago
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βˆ™ 2mo ago

All continents were formed around 2.5 billion years ago during the breakup of a supercontinent called Rodinia. However, the knowledge of all continents by humans developed gradually over time. Eurasia and Africa were known early in history, followed by the discovery of the Americas, Antarctica, Australia, and finally, the understanding of plate tectonics in the 20th century solidified the concept of continents.

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Q: When were all the continents discovered?
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In 1492, Christopher Columbus discovered the continents of North America and South America.


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