growth in rural areas of Africa and Asia often led to overgrazing and deforestation; depletion of the
rainforest was a factor in global warming.
Some progress in protecting the environment was made. Governments of industrialized nations
identified the chemicals that cause ozone depletion in the upper atmosphere and limited their use.
Antipollution devices were installed on automobiles, planes, and industrial smokestacks.
Rapid Review
Population issues in the period since 1914 have revolved around migration and control of population
growth. Migration in the period has most frequently been from developing to developed nations and,
second, from rural to urban areas. The latter often has resulted in the establishment of shantytowns
along the perimeters of major urban areas. Guest workers often became the victims of
discrimination, especially in Europe. Although some government programs limited population
growth, many rural areas in Africa and Asia suffered from depleted farmland insufficient to handle
their populations. Issues of poor air and water quality, global warming, and the devastation wrought
by warfare remained.
Review Questions
1 . Which of the following is the least common migration pattern from the 1960s to the present?
(A) From Asia to Europe
(B) From Europe to the United States
(C) From Mexico to the United States
(D) From the Middle East to Europe
2 . The largest displacement of people in the twentieth century was
(A) Albanian refugees leaving Kosovo
(B) the exchange between Muslim and Hindu areas after the partition of India
(C) illegal Mexican immigrants to the United States
(D) displaced persons after World War II
3 . Which of the following is true of population growth since 1914?
(A) The AIDS crisis has produced a marked decline in African population.
(B) Religious opposition has caused China to abandon its one-child policy.
(C) Population growth is not detrimental to rural environments.
(D) Cultural traditions and religious beliefs often promote population growth.
4 . The key pattern of migration in the twentieth and twenty-first centuries has been
(A) from war-torn areas to those at peace
(B) from rural to urban areas
(C) from urban to rural areas
(D) from developing to developed nations
5 . Which of the following was NOT true concerning the Green Revolution?