248 i PERIOD 6 Accelerating Global Change and Realignments (c. 1900 to the present)
automobile industry, increased industrial productivity. More people in the postindustrial
world worked in service industries because of increased mechanization of agriculture and
industry.❯ Rapid Review
World Wars I and II saw a number of technological fi rsts, from improved transportation
and communications to more elaborate weaponry. The atomic bomb ushered in a nuclear
age that was among the focal points of the Cold War era. Technology created new leisure
time activities, improved sanitation, and helped in the discoveries of new breakthroughs in
medical science. The use of technology to transmit information characterizes the twenty-
fi rst century.❯ Review Questions
- Postindustrial economies are characterized by a
large number of people involved in
(A) manufacturing
(B) mining
(C) agriculture
(D) service industries
(E) nuclear weaponry - Which of the following was NOT used first
duringWorld War I?
(A) Tanks
(B) Airplanes
(C) Radar
(D) Dirigibles
(E) Poison gas - The Helsinki Accords
(A) were a reaction against the insecurities of
the nuclear age
(B) were a nuclear disarmament plan
(C) increased Cold War rivalries
(D) called for a reduction in manned space
flights
(E) intended to increase communications
among nations of the free world
4. Technology in the twentieth century accom-
plished all of the following EXCEPT
(A) unmanned space flights
(B) genetic engineering
(C) the use of robotics
(D) manned space flights
(E) the invention of railroads
5. Twentieth-century inventions and accom-
plishments
(A) did nothing to improve household chores
(B) popularized radio, especially in Europe
(C) saw continued U.S.–Soviet compe tition
throughout the twentieth century
(D) were sometimes detrimental to the quality
of life
(E) did not enhance leisure time activities