With nearly 1 billion citizens, India’s population is rich with diverse ethnic and cultural groups. Ethnic groups are those based on a sense of common ancestry, while cultural groups can be either made up of people of different ethnic origins who share a common language, or of ethnic groups with some customs and beliefs in common, such as castes of a particular locality.

  It is impossible to speak of any one Indian culture, although there are deep cultural continuities that tie its people together. English is the major language of trade and politics, but there are fourteen official languages in all. There are twenty-four languages that are spoken by a million people or more, and countless other dialects. India has seven major religions and many minor ones, six main ethnic groups, and countless holidays.