WORLD HISTORY

Detailed explanation-1: -Role of improved seeds: The principle means to obtain crop yields in less favourable production area. Medium for rapid rehabilitation of agriculture after natural disasters.

Detailed explanation-2: -An important factor of the Agricultural Revolution was the invention of new tools and advancement of old ones, including the plough, seed drill, and threshing machine, to improve the efficiency of agricultural operations.

Detailed explanation-3: -Agricultural chemist George Washington Carver developed crop-rotation methods for conserving nutrients in soil and discovered hundreds of new uses for crops such as the peanut and sweet potato.

Detailed explanation-4: -Jethro Tull invented the seed drill in 1701 as a way to plant more efficiently. Prior to his invention, sowing seeds was done by hand, by scattering them on the ground or placing them in the ground individually, such as with bean and pea seeds.