In Kansas pro-slavery forces held a constitutional convention and drew up the United States Consititution. The constitution allowed Kansas to be admitted into the union as a slave state.

"Lecompton Constitution" is the right answer.

Explanation:

The Lecompton Constitution seems to have been a provocative as well as contentious Kansas territorial waters legally binding document that would become the priority of a major major disaster because as the US divided a couple of centuries before even the revolutionary war over all the spread of immigration. It included antebellum slavery provisions as well as a universal declaration of human rights concerning former slaves, which contributed to something like the constraints immediately before the US fight.