The graph shows the number of births in the United States over a forty-year period.
Today, people born during this period of time would
likely be most interested in maintaining
O national defense programs.
O the Social Security Administration
O food stamp programs.
o the public education system.

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.