In mid-18th century pioneers began to move across the Appalachian Mountains1, and by 1790 the trickle of westward movement had become a stream.

18世纪中叶，拓居者们开始越过阿巴拉契亚山脉向西行进。到了1790年，西进队伍己由涓涓细流变成了淙淙小溪。

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In mid-18th century pioneers began to move across the Appalachian Mountains1, and by 1790 the trickle of westward movement had become a stream.

18世纪中叶，拓居者们开始越过阿巴拉契亚山脉向西行进。到了1790年，西进队伍己由涓涓细流变成了淙淙小溪。

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