Answer:
Option: B. Intensification of regional trade
Explanation:
The building up regional trade led to the encouraging of the expansion of new cities such as Cahokia on the Mississippi River, Venice in Mediterranean coast, Swahili city-states in Africa, and Hangzhou in China. Trade helped to develop new cities with trading hum and a centre to exchange goods.
Cahokia was the largest and most influential urban settlement of the Mississippian culture.
Swahili city-state emerged as a trading business centre and exported goods, including gold, ebony, ivory, and sandalwood.
Venice was given trade rights to the Atlantic coast, which opened the opportunity for expansion.
Hangzhou became noted for trading with regional and foreign countries. Silk trade also became popular in Hangzhou.
