<span>Each time zone is 15 degrees wide.
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The Three-Fifths Clause was one of the many compromises delegates worked out during the Constitutional Convention in 1787. It struck a balance between large slave states in the South and smaller northern states that had abolished slavery. It restricted, but not eliminated, the apportioned congressional representation of slave states by limiting the Census to counting slaves as only three-fifths of a person
The main reason would be because so many of them had already died fighting against the British.