The practice of planting, tending, and harvesting crops most likely led to a "surplus of food", which in turn led to the diversification of labor and advancement of society, since people now could focus on things other than farming.
He extended Gupta's rule to the west coast of India which resulted in more trading.
The Old Immigration Wave was a group of people that were actually immigrants themselves whereas The New Immigration Wave can be people who weren't immigrants but there family members were or ancestors.
