The Maldives or Maldive Islands, officially the Republic of Maldives, is an island country consisting of a group of atolls stretching south of India's Lakshadweep islands between Minicoy Island and the Chagos Archipelago, and about seven hundred kilometres (435 mi) south-west of Sri Lanka in the Laccadive Sea of Indian Ocean. The twenty-six atolls of Maldives encompass a territory featuring 1,192 islets, of which two hundred islands are inhabited.[3] The original inhabitants were Buddhist, probably since Ashoka's period,[citation needed] in the 3rd century BC. Islam was introduced in 1153. The Maldives then came under the influence of the Portuguese (1558) and the Dutch (1654) seaborne empires. In 1887 it became a British protectorate. In 1965, the Maldives obtained independence from Britain (originally under the name "Maldive Islands"), and in 1968 the Sultanate was replaced by a Republic. The Maldives is the smallest Asian country in terms of both population and area; it is the smallest predominantly Muslim nation in the world. With an average ground level of 1.5 metres (4 ft 11 in) above sea level,[4] it is also the country with the lowest highest point in the world, at 2.3 metres (7 ft 7 in).[5]