Why did some Americans feel the articles of confederation was not suffcient for the new nation?

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

the correct answer is: (1) affected by gerrymandering; (2) not affected by gerrymandering.

gerrymandering is known as a practice that intends to establish a some kind of political advantage for a particular party or group. to do this district boundaries are manipulated. the new resulting district is named a gerrymandering.

in other words, what gerrymandering does is to draw the boundaries of electoral districts trying to benefit the party who is doing it. sometimes, the party controlling the legislature will redraw it so they can maximize the number of districts they are likely to control.