The fifteenth amendment to the united states constitution was primarily meant to 1. end the institution of slavery in the united states. 2. allow women the right to vote. 3. grant citizenship to all people born in the united states. 4. allow former male slaves the right to vote.

The correct number 4) allow former male slaves the right to vote.

The Fifteenth Amendment to the United States Constitution was primarily meant to allow former male slaves the right to vote.

The 15th Amendment to the United States Constitution was ratified on February 3, 1870. This Amendment was so important because it prohibits the states or the federal government to deny the right to vote to any citizen of the US based on its race or the fact that it was a slave in the past. This amendment was applauded by the people in the North, but it was not well received in the southern states.

6 units. ab and lo are congruent sides, and if ab= 6 units, then lo would be the same.