It's a reference to the law which was made that slaves would count for 3/5ths of a person when tallying population for representation in the legislative branch of the new American government.
The thirteenth amendment.
The three-fifths clause provided for counting three-fifths of all slaves for purposes of representation in Congress.
citizens
I believe it refers to slaves.
minus three fifths
Assuming that you mean "fifths", the answer is three fifths.
six and three fifths
Three fifths of fifty is 30.
Three fifths of a hundred is sixty.
two fifths
the south were very complex in their organizing
The Three-fifths Compromise was proposed by delegates James Wilson and Roger Sherman during the 1787 United States Constitutional Convention. The three fifths clause stated that slaves counted as only three-fifths of a person.The three-fifths compromise was a strongly anti-slavery provision put into the Constitution. It was written in order to block the pro-slavery south from gaining additional representation in Congress by counting slaves as a full person for census purposes, even though the same slaves did not have the right to vote. It was added as Article 1, Section 2, Paragraph 3 to the United States Constitution. It is often referred to as the 3-5 clause, even though it was The Three-fifths Compromise.It was superceded and thereby rescinded or abolished by the 14th Amendment in 1868, which gave black Americans the same rights as all other citizens.