Newburyparkhighschool.net

7. 1800s—Gregor Mendel, a botanist, discovers the basic principles of heredity. 8. 1850—Joseph Glidden develops barbed wire for use by cattle ranchers. 9. 1862—The Morrill Act creates land-grant universities. The USDA is established. 10. 1869—Transcontinental railroad is completed. 11. 1901—First successful gasoline engine tractor is ... ................
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