Humans have been on the move for millennia. They have done so slowly as well as quickly, sometimes involuntarily, sometimes transported by force, often relocated at great cost in lives, but they have always moved. Over the centuries, improved transportation has eased the movement, even in the face of man-made or natural obstacles. But in modern tim
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Humans have been on the move for millennia. They have done so slowly as well as quickly, sometimes involuntarily, sometimes transported by force, often relocated at great cost in lives, but they have always moved. Over the centuries, improved transportation has eased the movement, even in the face of man-made or natural obstacles. But in modern tim
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