Although India occupies only 2.4% of the world's land area, it supports over 15% of the world's population. Only China has a larger population. Almost 40% of Indians are younger than 15 years of age. About 70% of the people live in more than 550,000 villages, and the remainder in more than 200 towns and cities. Religion, caste, and language are major determinants of social and political organization in India today. The government has recognized 18 languages as official; Hindi is the most widely spoken. Although 83% of the people are Hindu, India also is the home of more than 120 million Muslims--one of the world's largest Muslim populations. The population also includes Christians, Sikhs, Jains, Buddhists, and Parsis.
The majority of Pakistan's population lives along the Indus River valley and along an arc formed by the cities of Faisalabad, Lahore, Rawalpindi/Islamabad, and Peshawar. The idea of a separate Muslim state emerged in the 1930s. On March 23, 1940, Muhammad Ali Jinnah, leader of the Muslim League, formally endorsed the "Lahore Resolution," calling for the creation of an independent state in regions where Muslims constituted a majority. At the end of World War II, the United Kingdom moved with increasing urgency to grant India independence. However, the Congress Party and the Muslim League could not agree on the terms for a constitution or establishing an interim government. In June 1947, the British Government declared that it would bestow full dominion status upon two successor states -- India and Pakistan. Under this arrangement, the various princely states could freely join either India or Pakistan. Consequently, a bifurcated Muslim nation separated by more than 1,600 kilometers (1,000 mi.) of Indian territory emerged when Pakistan became a self-governing dominion within the Commonwealth on August 14, 1947. West Pakistan comprised the contiguous Muslim-majority districts of present-day Pakistan; East Pakistan consisted of a single province, which is now Bangladesh.
India's relations with Pakistan are influenced by the centuries-old rivalry between Hindus and Muslims which led to partition of British India in 1947. The principal source of contention has been Kashmir, whose Hindu Maharaja chose in 1947 to join India, although a majority of his subjects were Muslim. India maintains that his decision and the subsequent elections in Kashmir have made it an integral part of India. Pakistan asserts Kashmiris' rights to self-determination through a plebiscite in accordance with an earlier Indian pledge and a UN resolution. This dispute triggered wars between the two countries in 1947 and 1965. In December 1971, following a political crisis in what was then East Pakistan and the flight of millions of Bengali
refugees to India, Pakistan and India again went to war. The brief conflict left the situation largely unchanged in the west, where the two armies reached an impasse, but a decisive Indian victory in the east resulted in the creation of Bangladesh.
CIA World Factbook; U.S. State Department Background Notes, 01/2001