All of the following contributed to the Dust Bowl of the 1930s except
a. dry-farming techniques.
b. unprecedented drought and wind storms of the trans-Mississippi Great Plains.
c. farmers' failure to use steam tractors and other modern equipment.
d. the cultivation of marginal farmlands on the Great Plains.
e. soil erosion.
Question 2
Edward Kennedy's campaign to take the presidential nomination away from Jimmy Carter in 1980 was handicapped by
a. his poor performance as a senator.
b. a growing dislike for the Kennedys.
c. Carter's popularity.
d. lingering suspicions about his involvement in an automobile accident in which a young woman was killed.
e. his inability to reach beyond New England.