Answer:
1) The development and advancement of tools and machines decreased the demand for rural labor. That together with increasingly restricted access to land forced many rural workers to migrate to cities, eventually supplying the labor demand created by the Industrial Revolution.
2) Any significant new improvement in agricultural technology generated a rapid increase in carrying capacity, and the human population of that region increased to the new carrying capacity over a period of centuries.
3) 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.