600-1450+-+South+Asia+-+Theme+1

__Theme # 1 Interactions between Humans and Environment__

 * Demography and Disease
 * Migration
 * Caste system reflected changes in Indian society and helped integrate immigrants into Indian society.
 * Patternsof Settlement
 * Technology
 * Irrigation methods
 * dikes
 * dams
 * canals
 * wells
 * tunnels
 * large ships
 * use of monsoon wind currents
 * leather tanning
 * stone masonry
 * cotton textiles
 * iron and steel metallurgy