Meanwhile, further afield, the shift of mountains and plains and rivers and the evidence of enormous movements of races gave me the feeling of travelling across a relief map where the initiative lay wholly with the mineral world. It evicted with drought and ice, beckoned with water and grazing, decoyed with mirages and tilted and shifted populations, like the hundreds-and-thousands in a glass-topped balancing game; steering languages, breaking them up into tribes and dialects, assembling and confronting kingdoms, grouping civilizations, channelling beliefs, guiding armies and blocking the way
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