How was the issue of slavery dealt with in the final version of the constitution?

In a compromise, slaves were to be counted as 3/5 of a person.  The conflict was over whether they should be counted in the census, and since the House of Representatives was to be based on a state's population, counting slaves in the population or not would have a major effect on the power of slave states.

Explanation:

the answer is the ku klux klan

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.