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I think you mean Madagascar not madagacsar ..... It separated from mainland Africa 160 million years ago.
India actually separated from the east side of Africa long after Africa-India separated from Antarctica. It left behind Madagascar and a long trail of small islands as it got further and further from Africa.Africa-India separated from Antarctica roughly 170 million years agoIndia separated from Africa roughly 110 million years agoIndia collided with Asia roughly 20 million years agoYou can estimate it yourself from the figures above.
The continents began to separate around 200 million years ago during the breakup of the supercontinent Pangaea. This process led to the formation of the current continents and their modern configurations.
About 300 million years ago, well before the continents separated.
the land has separated and some have expanded over the 425 million year span
The Isthmus and Panama Canal.
modern man evolved a few hundred thousand years ago. early man separated from chimps about three million years ago.
It formed approximately 300 million years ago and then began to break apart after about 100 million years. So, to answer your question; about 200 million years ago.
It is approximately 88 million years old. This is when Madagascar separated from the Gondwana supercontinent and became its own island.
North America and Europe were separated millions of years ago during the Mesozoic era, when the Atlantic Ocean began to form due to the movement of tectonic plates.
For two reasons. First, Tyrannosaurus Rex wasn't around 100 million years ago. it first appeared about 68 million years ago. Second, T. rex was a North American species that appeared after the continents separated.
Australia separated from Antarctica around 85 million years ago during the breakup of the supercontinent Gondwana. This separation gradually led to the formation of the Southern Ocean and the distinct landmasses we recognize today as Australia and Antarctica.