This dimension groups agricultural implements by the era in which they were introduced. Wikipedia notes that "irrigation, crop rotation, and fertilizers were introduced soon after the Neolithic Revolution and developed much further in the past 200 years, starting with the British Agricultural Revolution." Browsing by introduced year lets a visitor compare implements that entered use in the same period.
Facts
Comparison
Primary Power SourceAnimal Draft to Mechanical 1 1820s
Sources
1. Wikipedia: Plough
WikipediaPlough, lead section, propulsion sentenceQuote, Plough, lead section, propulsion sentence
Ploughs were traditionally drawn by oxen and horses but modern ploughs are drawn by tractors.
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