A Hindu (archaic Hindoo) is an adherent of philosophies and scriptures of Hinduism, also known as Sanatan (सनातन) Dharma or Vedic Dharma. It is the predominant religious, philosophical and cultural system of Bharat (India), Nepal and the island of Bali While almost all Indians were known as Hindus to the outside world till the 20th century, many Hindus themselves prefer the term Sanatani. A popular name for India is Hindustan, or Land of the Hindus. While almost all Indians were known as Hindus to the outside world till the 20th century, this usage has become increasingly controversial in view of the religious diversity of the Indian subcontinent. More than one billion people across the world practise Hinduism - 950 million of them live in the Indian subcontinent, the birthplace of Hinduism. The Himalayan kingdom of Nepal is the world's only Hindu nation. Although majority of the Indian population practices Hinduism, India is a secular republic. Large Hindu communities, mostly expatriates from India, live in South East Asia, the North America, the West Indies, Western Europe, the Middle East, East Africa and South Africa. The Hindus of Bali, and in other parts of Indonesia are indigenous Indonesian Hindus.