Generally, the first use of irrigation systems is credited to the Egyptians. Hieroglyphs show men irrigating the water from the Nile on their fields more than 4,000 years ago.
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Irrigation first began in China in 500 B.C.
The most important invention of the Sumerian's was Irrigation. Irrigation is how the Sumerian's led their water through pipes, etc.
they were using irrigation.
Most irrigation methods are inefficient because water often evaporates or seeps into the ground before it reaches the crops.
agriculture