A number of changes took place in society during 700 and 1750. This period traced the technological appearance of the Persian wheel in irrigation, the spinning wheel in weaving and firearms in combat. Potatoes, corn, chilies, tea, and coffee were some of the new foods and beverages. These developments came with the arrival of the people who migrated to this land. As a result, this period saw various changes in the economic, political, social and cultural life.