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It's a question of whether slavery was going to be able to expand into federal territories. That is what really created the starkest difference between the two sections in the
1850s, even in the late 1840s. The issues that came to most, uh, perilous a point in the view of many people then had to do with whether slavery would
be allowed only where it already existed, or would it be allowed to expand. If it could expand, then it seemed that it might
Listen to native speakers pronounce “1850s” in real conversational contexts with synchronized timestamps and subtitles.