What is "rajarata"

Rajarata [ra dja rǽ tə] (Sinhala: රජරට) (Tamil: ரஜரட) was one of three historical regions of the island of Sri Lanka for about 1,700 years from the 6th century BCE to the early 13th century CE. Several ancient cities, including Tambapanni, Upatissa Nuwara, Anuradhapura and Polonnaruwa, were established as capitals within the area by successive rulers. Rajarata was under the direct administration of the King (raja/king, rata/country). Two other areas, Malayarata and Ruhunurata, were ruled by the king's brothers "Mapa" and "Epa" . The Magha invasion in the 13th century brought about the end of the Rajarata kingdom.