"In the beginning," writes Norman Davies, "there was no Europe. All there was, for five million years, was a long, sinuous peninsula with no name, set like the figurehead of a ship on the prow of the world's largest land mass. To the west lay the ocean which no one had crossed. To the south lay two enclosed and interlinked seas, sprinkled with islands, inlets, and peninsulas of their own. To the north lay the great polar icecap, expanding and contracting...