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Explanation:
I am pretty sure the answer is ( c ) if i am wrong i am sorry
The correct answer is:
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.
I would say D Russian soldiers invaded Poland and found some camps
New farming arrangements led to "<span>a. a focus on cash crops" since these new arrangements and technologies made the production of cotton far more lucrative. </span>