Authors of Constitution Leveraged 3/5ths Slave Personhood for Congressional Apportionments to Get Deal Done

When the contents of the U. S. Constitution were being negotiated, the slave states of the South didn’t want slaves to vote yet insisted that slaves be counted in the apportionment of Congressional seats, but the states of the North wanted the right for slaves to vote (and to be counted in the apportionment process), the compromise to achieve the union of the southern and northern states that slaves would be counted 3/5ths for the purpose of apportionment, otherwise the South would not have participated.