国立アメリカ歴史博物館のインスタグラム(amhistorymuseum) - 3月14日 23時13分

Today in 1794: Eli Whitney patents his cotton gin, which cleaned the tight-clinging green seeds from cotton. According to the economist Tench Coxe the gin was the production equivalent of 1,000 slaves. (Source: American National Biography.) #todayinhistory

[BIHAKUEN]UVシールド(UVShield)

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