The main factor was the utilization of raised field agriculture. They would build these fields that had been artificially raised to a certain height along a flowing water source (mostly rivers but occasionally streams as well in some cases). When tropical weather patterns would cause said water sources to flood, instead of washing away the crops, it would act as irrigation for the raised fields. Securing a steady food source allowed the Mayans to support a large civilization in the tropical regions they called home.
USSR (Russia) was led by Stalin
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The US war on drugs and its legacy in Latin America ... The legacy of the US-funded war on drugs in Latin America is profound even as its impact has been ... to dictate the implementation of policy as it did in the 70s and 80s.
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