Jefferson wrote an ordinance banning slavery in all the nation's territories though it wasn't passed into law.

The island was dominated by Quakers, who were among the first Americans to ban slavery.

In turn, the southern states agreed to allow a maximum of three new future states that would ban slavery.

Bridgwater became the first town in Britain to petition the government to ban slavery in 1785.

The third proposed amendment that is still technically alive would prohibit Congress from banning slavery.

"The biggest revolution," he said, "was the passage of the 13th Amendment," banning slavery.

Thus, Lincoln sponsored a constitutional amendment to ban slavery.

Article 8 of this international treaty bans slavery.

Jefferson wrote an ordinance banning slavery in all the nation's territories (not just the Northwest), but it failed by one vote.

The decision was a major victory for the abolitionists in the state who had organized to ban slavery only seventeen years earlier.