What renewed abolitionists to fight to end slavery nationwide in the early 1800's?

Answer,

They were motivated by their moral beliefs that slavery was immoral.

Explanation,

Abolitionist formed the Aolitionist Movement whose effort was to endAntlantic slave trade and they valued personal freedom and believed all men are equal.They(Abolitionists)became more obnoxious in their demands and slave owners entrenched in response which led to regional divisiness which resulted to American civil war. https:/13th Amendment of the american constitution approved and ended slavery.

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explanation:

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.