Why did the oklahoma territory initially use nebraska’s code of laws

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

Which statement best summarizes the process of the abolition of slavery in the united states? o a slave owners agreed to limit and ultimately abolish slavery to prevent a slave rebellion similar to the haitian revolution o b. the united states did not abolish slavery until after many latin american countries did because it faced opposition from powerful slaveholders o c. the abolition movement in the united states used a series of legal challenges to successfully outlaw slavery. d. the abolition movement used nonviolent tactics to eventually convince the u.s. government to abolish slavery.

What was the national government’s biggest concern is facing a war under the articles of confederation