1) The Vedic civilization spanned from 1500-600 BCE and was divided into the Early Vedic and Later Vedic periods.
2) The Aryans migrated to India through the Khyber and Bolan passes from Central Asia, settling first in the land of the seven rivers (Sapta Sindhu) in modern-day Pakistan and Punjab.
3) During the Early Vedic period, the Aryans were nomadic tribes who migrated according to seasons and their main occupation was animal husbandry. In the Later Vedic period, they settled in villages and towns and took up agriculture in addition to animal husbandry.