Which constitutional principle allows the United States Constitution to change over time?

c. it required that townships set aside land for public schools.

it maybe, we dont know. however lucky the lipercon seams guilty

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.