Hints: Africa Serengeti Plains Vienna Paria Florence Oxford Jurassic park Europe Sahara Berlin Edinburgh

And at other times, they'd have looked more like Africa's Serengeti Plains. More than 15 million years ago, what is now Vienna and Paris would have been submerged beneath rich tropical seas. And over 100 million years ago, Florence and Oxford would have looked more like Jurassic park. Go back over 200 million years, and Europe rivaled the Sahara. And 300 million years ago, the world's first forests covered the continent. Berlin would have been part of the tropical rainforest. Edinburgh sits astride ancient volcanoes which shook the earth nearly half a billion years ago. All these great events help to lay the foundations for the extraordinary continent we now call Europe.

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