Carroll introduced a bill for the gradual abolition of slavery in the Maryland senate but it did not pass.

It proposed the gradual abolition of border checks at the signatories' common borders.

To show its commitment to progress, Kyrgyzstan has announced a plan for the gradual abolition of the death penalty.

Pennsylvania was the first, in 1780 passing an act for gradual abolition.

In 1780, Pennsylvania passed a gradual abolition of slavery law.

At various times in his life, Washington privately expressed strong support for the gradual abolition of slavery.

The first state to begin a gradual abolition of slavery was Pennsylvania, in 1780.

Between 1777 and 1804, every Northern state provided for the immediate or gradual abolition of slavery.

In 1799, the legislature passed a law for gradual abolition.

Pennsylvania passed a law for gradual abolition of slavery in 1780.