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。

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

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林肯随后为他有关美国不能再以一半是奴隶制一半是自由州的形式存在的声明辩护，他说，他的意思并不是说每个州的习俗或制度都必须一样。

Lincoln then defended his statement that the United States could not continue half slave and half free. He said he did not mean that customs or institutions must be the same in every state.

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例如，在一个宣传人人生而平等，出生时即享有天赋的生命权、自由权和追求幸福的权利的国度怎么还存在奴隶制。

For example, how could slavery exist in a nation whose people declared that "all men are created equal" and with a right to life, liberty and the pursuit of happiness?

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For example, as in the rest of the ancient world, slavery existed in Israel. It did. Even so, and this is not to apologize for it, there is a tendency toward humanitarianism in the laws concerning slavery.

例如，就像远古世界的其它地方一样，奴隶制也存在于,以色列，即使这样，也不必为此感到抱歉，在有关,奴隶制的法律里都有一种人道主义倾向。

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