These states stayed in the Union, but allowed slavery.

"Judges years ago said that the Constitution allowed slavery because of personal property rights," he explained.

They proposed that the southern half would allow slavery.

Sweden made the slave trade illegal in 1813, but allowed slavery until October 9, 1847.

That's why his Compact doesn't allow slavery or even bonding.

He decided to allow slavery in the acquired territory, which laid the foundation for the crisis of the Union a half century later.

Even though parts of the United States allow slavery, too.

New Mexico allowed slavery, but it was rarely seen there.

However, there were still a few Union states in the west that allowed slavery.

Out of the four proposed constitutions, three did not allow slavery.