According to Aristotle, plot is the most important element of tragedy.
I think it is A B and C, but I am not completely sure, it might be B, C, and D.
The <span>most significant result of the ruling in Marbury vs madison was that the powers of the federal government greatly expanded, since the Supreme Court now had the power of "judicial review". </span>
The ferocity of the fighting and number of casualties served as a wake up call for both the Confederacy and the Union. It was also after this battle that the "Southern Cross" was adopted as a battle flag for the Confederacy.