Malcom X and MLK would ask the followers to protest differently, MLK wanted peaceful protests opposed to Malcom X who wanted violence.
Irrigation made it possible to grow rice in very dry climates. ... Irrigation ditches were used to mark the boundaries between crops. Irrigation allowed for the movement of water to fields, even without rain
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Alfred Russel Wallace (1823-1913) was a man of many talents - an explorer, collector, naturalist, geographer, anthropologist and political commentator. Most famously, he had the revolutionary idea of evolution by natural selection entirely independently of Charles Darw