India is the second most populous country and will become the most populous within 10 years. It has the third largest army and exports over $200 billion annually to the US. Several neighboring countries also have large armies and nuclear weapons. The document then discusses the Indo-European migrations, where nomadic groups spread throughout Europe and Asia around 2000 BC, speaking related languages. One group, the Aryans, migrated to India around 1500 BC and influenced the culture and development of the caste system, spreading their language and religion which became Hinduism.