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

the committees of correspondence were the american colonies’ means for maintaining communication lines in the years before the revolutionary war. in 1764, boston formed the earliest committee of correspondence to encourage opposition to britain’s stiffening of customs enforcement and prohibition of american paper money. the following year, new york formed a similar committee to keep the other colonies notified of its actions in resisting the stamp act. in 1773, the virginia house of burgesses proposed that each colonial legislature appoint a committee for intercolonial correspondence. the exchanges that followed built solidarity during the turbulent times and bring about the formation of the first continental congress in 1774.

the confederate at bull run

declare war, appoint military officers, sign treaties, make alliances

companies passed on production and transportation costs to consumers