Al jolson's movie the jazz singer was important culturally because

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Al Jolson's movie The Jazz Singer was important culturally because its release declared the commercial rise of sound films and concluded the silent film era.

The Jazz Singer is a 1927 American musical film, directed by Alan Crosland and produced by Warner Bros. It was the first feature-length motion picture with not only a synchronized recorded music score, but also lip-synchronous singing and speech, with its Vitaphone sound-on-disc system.

a. there was serious competition for tech jobs at the downtown clinic.

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the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.