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During the late 1920s and early 1930s, scientists made tremendous advances in synthetic rubber's production. By the start of World War II, synthetic rubber's manufacturing cost had declined dramatically, but it still proved to be more expensive than natural rubber. With the shortage of rubber in the United States during World War II, American businesses still had to switch to synthetic rubber to meet the country's needs. Akron, Ohio, tire companies, including Goodyear Tire and Rubber Company and Firestone Tire and Rubber Company, took the lead in developing synthetic rubber products, ending the United States' dependence on foreign rubber. Upon World War II's conclusion, these same companies began to produce synthetic rubber items for peacetime use as well.
[[Category:Great Depression and World War II]]