Mahasena

Mahasena, influenced by the teachings of the monk Sanghamitta, suppressed Theravada Buddhism and destroyed several temples, including the Mahavihara in Anuradhapura. This action caused a schism in the Buddhist community and led to a period of religious conflict.

Mahasena constructed the Minneriya tank, one of the largest irrigation reservoirs in Sri Lanka. The tank, with a circumference of over 20 miles, provided water for agriculture in the dry zone, significantly boosting rice production and supporting a large population.

Mahasena built the Kavudulla tank, another major irrigation reservoir in the North Central Province. This tank, along with Minneriya, formed part of a network of reservoirs that transformed the dry zone into a productive agricultural region.

Mahasena constructed the Giritale tank, a large irrigation reservoir near Polonnaruwa. This tank further expanded the irrigation network in the dry zone, demonstrating Mahasena's focus on water management and agricultural development.

Later in his reign, Mahasena reversed his anti-Buddhist policies and restored the Mahavihara. He also built the Jetavanaramaya, a large stupa in Anuradhapura, which became a major center of Buddhist worship.