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The results of Columbus's voyages of discovery were incalculable. The potato alone is said to have revolutionized European agriculture. Also, the introduction of maize, tomatoes, peppers, peanuts, yams, and turkeys, fed millions of Europeans.
the cotton gin
George Washington Carver
Chemists make fertiliser, agriculture needs fertiliser.
John Deer's steel plow helped in agriculture because the others broke when they tried to brake up the sod.
to be happy once again
Rice, Wheat etc
With an introduction of agriculture, people could depend on a reliable source of food. This meant that people did not have to travel in search of food, but could settle in one area.
William Scrugham Lyon has written: 'Report on the introduction and distribution of seeds and plants by the Bureau of Agriculture' -- subject(s): Accessible book, Plant introduction, Agriculture
Harold Augustin Tempany has written: 'An introduction to tropical agriculture' -- subject(s): Agriculture
20% as in 2005-2006 statistical year
The introduction of 'Collective farming' .