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All of them. They were once part of Pangaea. A big chunk of landmass that contained all continents we know today. They slowly drifted apart due to continental drift and are in the pattern we see today.

But if you mean what's the oldest of the 7 that exist today... That would be Australia.
The continents are equally old. The Earth originally was a globe of rock that gathered together from space dust and rocks that came from even older stars exploding.

With the heat in the Earth that came from the pressure of gravity, the rock mass broke into separate, adjacent pieces over millions of years. These pieces drifted apart and created space in between over millions of years. These individual 'continents' drifted all over the globe in even more millions of years, and ended up clustered together again in the Southern Hemisphere. Due to changes in climate, including a 100,000-year-long cloudburst, the low spots between the drifting, moving continents filled in to become the oceans. And millions and millions of years later, the drifting and moving continues today.

So, you see, the continents are all equally old . . . as old as the Earth itself.
Africa

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8y ago

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