What earlier legislation or decision did the kansas-nebraska act overturn?

the dred scott supreme court decision
the compromise of 1820
the fugitive slave law
the compromise of 1850

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

salmon were fished in puget sound.

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

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