The main reason why a severe downturn in oil prices during the early '80s was detrimental to the Soviet economy is because the Soviets depended greatly on the export of oil for their economy to strive--meaning that when prices fell so did their GDP.
A historian using the historical thinking skill of examining historiography might want to pay close attention to how the thinking about a certain historical period has changed over time, in light of new evidence.
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a scientist studying the principles of botany
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The election of 1866 gave them control of the two places of congress. The 1866 races were an unequivocal occasion in the early Reconstruction time, in which President Andrew Johnson went head to head against the Radical Republicans in an intense disagreement about whether Reconstruction ought to be permissive or brutal toward the vanquished South.
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