Because of widespread fear of a strong central government at the time they were written and strong loyalties among Americans to their own state as opposed to any national government during the American Revolution, the Articles of Confederation purposely kept the national government as weak as possible and the states as independent as possible. However, this led to many of the problems that became apparent once the Articles took effect.
The Answer is 125
50+50=100
100+10=110
110+15=125
John Quincy Adams in what is called the "Corrupt Bargain" of 1824
I believe that the answer is a.) It was the segregation of the transportation system in the United States.