Editing Cotton gin (section)

===United States===
[[Image:Cotton gin harpers.jpg|thumb|"The First Cotton Gin", an engraving from ''[[Harper's Magazine]]'', 1869. This carving depicts a roller gin being used by African slaves, which preceded Eli Whitney's invention.<ref>[[Cotton gin#Lakwete|Lakwete]], 182.</ref>|left]]The Indian roller cotton gin, known as the ''churka'' or ''charkha'', was introduced to the United States in the mid-18th century, when it was adopted in the [[southern United States]]. The device was adopted for cleaning [[long-staple cotton]] but was not suitable for the [[short-staple cotton]] that was more common in certain states such as [[Georgia (U.S. state)|Georgia]]. Several modifications were made to the Indian roller gin by Mr. Krebs in 1772 and Joseph Eve in 1788, but their uses remained limited to the long-staple variety, up until Eli Whitney's development of a short-staple cotton gin in 1793.<ref>{{cite web|last1=Hargrett|first1=Elizabeth|last2=Dobbs|first2=Chris|title=Cotton Gins|url=https://www.georgiaencyclopedia.org/articles/history-archaeology/cotton-gins|website=[[New Georgia Encyclopedia]]|date=6 June 2017}}</ref>