Two main cities were Harappa and Mohenjo-daro. The civilization ended because of the climate and invasion by non-Indus people
2000 bc - 1400 bc
that is, migrations into the Indian subcontinent of people speaking an Indo-European language.
The Rig Veda
1500 bc - 1200 bc
The Rig Veda, or first book of the Vedas, is composed.
Early Hinduism. Usually seen with rituals beliefs in reincarnation, dharma, karma, and division into the four classes.
The later Vedas, the Brahmanas, and the early Upanishads
900 bc - 500 bc
The later Vedas, the Brahmanas, and the early Upanishads are composed.
800 bc - 600 bc
The Brahmans, a priestly caste, begin to emerge.
Hindu law books composed
500 bc - 500 ac
Hindu law books (e.g., The Laws of Manu) and epics (e.g. , the Ramayana and the Mahabharata, of which the Bhagavad-Gita is a part) are composed, and the six orthodox systems of philosophy are developed.
324 BCE - 200 BCE
Chandragupta dominated North India, then it extended to the southern
Invasions of North India
Central Asian tribes invaded North India. Mostly Bactrian Greeks, Sakas, and Kushans. They established a dynasty.