Democracy is efficient in the sense that it allows people to have free will and vote for what they believe is right, Democracy also allows the people to have control, which you will not find dictators.
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The ruling of the case "Brown vs the Board of Education" is, that racial segregation is unconstitutional in public schools.
Answer:
Canada and the United States
President Cardoso stabilized Brazil's economy in the 1990s<span> bycutting back on government spending and reducing inflation.</span>