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

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.

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s