History of Agriculture By HappyHounds 10,000 BCE The First Agricultural/Neolithic Revolution 9000 BCE Use of Animals to Work the Land 7000 BCE When We Began Raising Livestock 1701 Use of Large Machinery to Work the Land 1840 Monocropping was First Developed 1940 Synthetic Chemical Fertilizers and Pesticides Were Developed and Became Widely Used 1950 The Invention and Wide-Spread Use of Concentrated Animal Feeding Operations (CAFOs) 1960 The First Green Revolution 1994 GMOs Were Developed and Became Widely Used 2018 Second Green Revolution