Tracing Changes Through A Thousand Years — Social Studies STD 7 — Question

Thousand years of history is full of change. 16th and 17th centuries were different from 8th or 11th centuries. Therefore entire period cannot be described as one unit.
Modem period is associated with material and intellectual progress. But, this does not mean the medieval period had no development at all. All this creates confusion, hence periodisation was required.
During these thousand years the societies of subcontinent were developed and economies too prospered. This attracted interest of European trading companies.