During the 18th and 19th centuries, increased contact between European and the continents of Africa, Asia, and South America resulted in 1 point
a. The exploitation of the labor resources of these continents
b. Closer cultural cooperation between Europe and these continents
c. A return to the political and economic systems of feudal Europe
d. Preservation of the rights of the indigenous peoples

Which of these would be most useful in studying the effect of germs exchanged between the new and old worlds? a. a graph showing the number of europeans between 1492 and 1600. b. a graph showing the number of native americans between 1492 and 1600. c. a primary source description of the symptoms of an unknown disease affecting native americans in 1492. o d. a primary source description of the symptoms of an unknown disease affecting europeans in 1492.