The correct answer is <span>Marbury v. Madison
This was one of the most important cases in United States history because it showed to what extent does the power of the judicial branch actually go. They managed to show that the judicial branch, as a part of the checks and balances system, has the power to completely abolish a law or an executive order if they find it to be unconstitutional.</span>
D, the folklore of a country
I think the answer to your question you ask is the letter b. the second to last.
One of the main reasons why Andrew Johnson faced difficulty implementing his Reconstruction plans is because he face harsh opposition in Congress--both by Radical Republicans and Democrats alike.