As a result from McCulloch vs Maryland, two very important consequences aroused. First, the doctrine of the "implied powers" , understanding that the Constitution grants said implied powers to the Congress to implement the express powers. Secondly, that no state action can interfere with valid constitutional exercise of power by the federal government.
On June 28, 1914, in an event that is widely regarded as sparking the outbreak of World War I, Archduke Franz Ferdinand, heir to the Austro-Hungarian empire, was shot to death with his wife by Bosnian Serb Gavrilo Princip in Sarajevo, Bosnia.
I believe its; Had understand of scientific principles, had understanding of mathematics, developed technologies which somehow were lost (The records of the lost technologies were burned down in a library/and when Roman was overran by barbarians, thus I'm not sure if the last one is correct or not.)
The New Jersey plan. The Virginia plan favored large states
The correct answer is C) The United States outlawed slavery.
The "Era of Good Feelings"refers to the era of the Monroe Presidency which took place from 1817-1825. However, the United States is not going to outlaw the institution of slavery until the passing of the 13th amendment. The 13th amendment is not passed until 1865, showing that C must be the answer, as it happened several decades after the "Era of Good Feelings."