What policy did president woodrow wilson follow when world war i broke out in europe? he promised to provide economic support to the allies. he declared u. s. neutrality and the right to trade with both sides. he mobilized the u. s. military in preparation for joining the war. he convinced u. s. merchants to boycott arms sales to both sides.

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.