Jonas salk developed a serum for prevention.

measles
polio
hepatitis
smallpox

Which option best completes the diagram? the cold war is the major u. s. foreign policy priority terrorism becomes a major concern of u. s. foreign policy. a. the second iraq war begins. b. the september 11 terrorist attacks occur. c. terrorists attack the 1972 summer olympics. o d. the soviet union collapses.

Which quotation from the declare ration of independence shows the idea of the social contract

What was v-e day? a. victory in england day b. victory in europe day c. victory in japan day d. victory every day