The Cholas ruled large parts of Southern India from the 9th to 13th century. Vijayalaya founded the Chola Kingdom in the mid-8th century by conquering the kingdom of Tanjore from the Pallavas. The Cholas had a powerful army and formidable navy that controlled the seas from Sri Lanka to Sumatra. Under the Cholas, Tamil culture reached new heights in art, religion, literature, and architecture like the majestic temples built during this period. Chola society was divided into four classes and women were given high status and freedom.