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In the fourth century B.C. the Greek philosopher, Plato, wrote about a(n) (0) ... civilisation called Atlantis which he claimed existed long before the ancient civilised (1) ... of the Middle East or Egypt. Atlantis was thought to have been a huge island (2) ... to the west of Europe which had an extremely advanced civilisation whose empire stretched as (3) ... as Greece and Egypt. However, (4) ... to Plato, the island and its people disappeared into the ocean around 11,500 years ago as a result of an enormous earthquake.