Although new methods and machinery simplified work and increased output, industrialization introduced new problems as well. Some of the drawbacks included air and water pollution and soil contamination that resulted in a significant deterioration of quality of life and life expectancy
The Iron Curtain forms the Western border of the Soviet Satellite nations: all the countries to the West, also called the "West Bloc" were capitalist and the countries on the East are called "East Bloc".
So the relationship was: the Iron Curtain was to the West of the Soviet Satelite nations.
Science uses experiments to support its explanation
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