Kaltura Share to Google Classroom The McDonalds explain how cotton is processed. Grades: 3 4 5 6 7 8 9 10 11 12 Subjects: Social StudiesS.C. HistorySouth Carolina CultureAgriculture Collection: South Carolina CountiesMarlboro | SC Counties Series: Digital TraditionsAgriculture | Digital TraditionsLeslie and Gilbert Stuart McDonald