1) Cotton Gin Invention 2) First Cast Iron Plow  3) Beginning of the U.S Food- Canning Industry 4) Wheat Reaper Invention 5) John Deere and Leonard Andrus Steel Plow 6) First Grain Elevator 7) Mixed Chemical Fertilizers Introduced 8) Congress Passes the Homestead Act 9) First Transcontinental Railroad Across the U.S 10) Barbed Wire Patented 11) Refrigerated Railroad Cars Invented 12) Quick-frozen Food Developed 13) First Light Tractor Invented 14) Automatic Hay Bailer Invented 15) Frozen Food Gains Popularity 16) First Chemical Herbicide Patented 17) No-till Agriculture Gains Priority  18) Louis Pasteur Invents Pasteurization 19) Genetically Modified Plants Cultivated Around the World.

Agriculture Timeline

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