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17. Whose theory countered Malthusian theory, sug- 20. The sending of remittances would MOST relate to
gesting that humans would develop technologies which form of migration?
to increase food supply? a. Environmental push factors
a. Carl Sauer d. Karl Marx b. Chain migration
b. Paul Erhlich e. Ester Boserup c. Intervening obstacles
c. Thomas Malthus d. Intervening opportunities
18. According to Ravenstein’s laws of migration, e. Brain gain
which statement is correct?
a. A rural woman is more likely to move
internationally.
b. A rural man is more likely to move to a rural
community in another region.
c. A young man is more likely to move
internationally.
d. An elderly woman is most likely to move for
environmental reasons.
e. An elderly man is most likely to move for eco-
nomic reasons.
19. The following image BEST depicts which concept
in migration?

African Slave Trade, 1500–1900
Source area

3,000,000 slaves 1,500,000 slaves

EUROPE
NORTH
AMERICA
American
Colonies SAUDI
ARABIA
EGYPT
ATLANTIC OCEAN NORTH
AFRICA
CUBA
SENEGAMBIA SIERRA AFRICA
LEONE GOLD
Caribbean Islands
COAST BIGHT OF BENIN
BIGHT OF
BIAFRA
WEST
CENTRAL
SOUTH AFRICA
AMERICA
BRAZIL

a. Economic pull factor
b. Forced migration
c. Environmental push factor
d. Political pull factor
e. Refugee movements

Unit 2 AP® Exam Practice Questions 129
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