| http://www.w3.org/ns/prov#value | - During the 1950s and 1960s, national income nearly doubled, giving Americans about 40% of the planet's wealth. ??? ??? ??? Middle Class doubled from pre-Great Depression days, including 60% of the population by the mid 1950s. ??? ??? ??? military budget 1950s helped jumpstart high-technology industries such as aerospace, plastics, and electronics.
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