Hardly less important was the invention of the prairie plow which solved the problem of breaking the matted soil. In 1837 a steel plow sufficiently strong to do this work was brought out by John Deere and within ten years this implement was being effectively marketed. ... Property Produced Produced Produced 1850 1.440 $3, 967, 340 2, 140 592, 070 104, 800 1860 2, 040 $7, 980, 490 3, 840 838, 790 173, 100anbsp;...
Title | : | The growth of American democracy |
Author | : | Jeannette Paddock Nichols, Roy Franklin Nichols |
Publisher | : | - 1939 |
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