The four states are A. Kansas, C. California, F. New Mexico, and G. Utah. I know these are the four states of where popular soverignty was propsed/used to determine an answer to the slave question because when i learned about slavery, my teacher was saying Kansas, California, New Mexico, and Utah were the four areas were the slave question was answered. Hope I helped! :P <span />
Why is Marbury v. Madison important? Marbury v. Madison is important because it established the power of judicial review for the U.S. Supreme Court and lower federal courts with respect to the Constitution and eventually for parallel state courts with respect to state constitutions.