On which of the following has the internet had the greatest effect?
a.
the differences between cultures
b.
the number of people without computers
c.
the time it takes to send a message
d.
the speed of cultural diffusion

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.