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King Mahasena, who reigned from 276 to 303 CE, was a significant ruler in Sri Lanka known for his contributions to irrigation systems. He is credited with constructing numerous major irrigation tanks and canals, with the Minneriya tank and its feeder canals being particularly outstanding examples. The Sinhalese civilization was heavily reliant on sophisticated hydraulic engineering for agriculture, and Mahasena's work advanced this technology. The construction and maintenance of these large-scale irrigation works were a primary focus for kings, as efficient water management led to increased agricultural productivity and, consequently, enhanced royal power.123

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