Answer:
1868.
Explanation:
The Constitution outlawing slavery was changed in 1865. The 13th and 14th Amendments were the result of the three-fifth compromise agreement. The three-fifth compromise agreement was enacted in the law which gave Southerners more power by counting their slaves to gain taxation and representation.
<u>After the Civil War, the Congress passed 13th, 14th, and 15th Amendments which abolished slavery gave them rights to be called a citizen of the United States, and right to vote. These amendments were passed in the years 1865, 1868, and 1869-70 respectively</u>.
The foundation of counting blacks as a whole person was in 1865 with the 13th Amendment which abolished slavery. But, it was officially enacted with the 14th Amendment which stated that the African-Americans will be counted as a whole person and not 3/5 persons.
So, the correct answer is 1868.
