When did scientists start to systematically measure air contamination in big cities and industrial regions?
A. in the 1960s
B. the beginning of the twentieth century
C. near the beginning of the industrial revolution
D. during the interwar years
Answer: A
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During World War I, women in the United States
A) made few significant contributions to the war effort. B) demonstrated that they were unable to assume most of the jobs traditionally occupied by men. C) served in combat. D) found new employment opportunities.
Woodrow Wilson claimed that modern communications would allow him to remain in contact with Washington while he went to Paris. What type of communication was he referring to?
A) morse code B) transcontinental telegraph C) postal mail D) transatlantic telegraph
In the Balfour Declaration of 1917, the British appeared to __________.
A. recognize an independent Jewish state in Palestine B. acknowledge the authority of the Saudi family over the Arabian Peninsula C. agree to the partition of the Ottoman Empire between Britain and France D. disallow any treaties made with Russia before the revolution
In the smaller states of sub-Saharan Africa, the chief considerations for determining social position were
A. a successful marriage and number of children. B. kinship, age groupings, and sex and gender expectations. C. personal wealth and landholdings. D. military might and personal courage in battle. E. ownership of slaves and ownership of weapons.