The nature/nurture debate is a dead-end argument because nature and nurture are always working together to produce whatever behavior or trait is being considered.

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.

missouri compromise of 1820 which prohibited slavery