Due to the columbian exchange, europeans brought diseases such as the flu and common cold to the americas, which resulted in millions of native americans dying because they had no immunity against such diseases. true false

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.

international economic development agencies harm poorer nations by encouraging them to serve as exporters to wealthier nations.

the correct answer is 50.