Don’t go off this answer wait for confirmation but maybe literacy rate
One problem with
administering iq tests to school-age children is that these tests may be culturally biased. By definition culture is
the mix of values and norms that are communicated from generation to generation
socially, the results may vary according to the culture the examiner exposed
to.
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Some plantion owners had cash crops and there they worked the slaves harder
Churchill claimed that the Soviet Union wanted war.
