Once in office, Jefferson extended slavery with the Louisiana Purchase in 1803; the new land was carved into 13 states, including three slave states.

入主白宫以后，杰弗逊在1803年通过购买路易斯·安娜扩大了奴隶制；这片新的土地后来被分为13个州，其中包括了三个蓄奴州。

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Once in office, Jefferson extended slavery with the Louisiana Purchase in 1803; the new land was carved into 13 states, including three slave states.

杰斐逊当权期间，曾通过1803年购买路易斯安那州进一步拓展了奴隶制的存在范围：新大陆被分成13个州，包括3个实行奴隶制的州。

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