Who developed the polio vaccine?
a. John Kenneth Galbraith
b. Marie Curie
c. Albert Einstein
d. Jonas Salk
Ans: d. Jonas Salk
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Which of the following was true of suburban life in the 1950s?
a. Many young families had to share their homes with extended family members. b. Many parents were too focused on earning money to make time for family bonding. c. The suburban nuclear family did little to encourage feminism. d. Many children received little attention from their hard-working parents.
Why did Africans begin raiding their neighboring territories after 1600?
A) The Muslims gave them money for converts to Islam. B) They needed men for armies to ward off European invaders. C) The value of slaves had increased. D) They wanted to repopulate after their own people had died of disease. E) They wanted to acquire bronze crafts to sell to the Europeans.
The innovative new weapon that proved crucial in the battle of the ironclads was the ____________________
Fill in the blank(s) with correct word
Many conditions prevailed in New England as a result of its poor soil. What is NOT one of these conditions?
a. Hard work was required to make a living. b. The area was less ethnically mixed than its southern neighbors. c. Frugality became essential to economic survival. d. Reliance on a single, staple crop became a necessity. e. Fishing and shipping became crucial industries.