had purchased US small arms in the summer of 1940, but needed an alternative to cash transactions. The Roosevelt administration came up with the straight trade concept, and in September 1940, Roosevelt signed
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Areas like the Indus Valley Civilization (India), Egypt and China developed advanced civilizations first. Yes, geography played an important role. All of these civilizations had large rivers to support agriculture, Indus river in Indus Valley Civilization, Nile river in Egypt and Yellow river in China.
