Answer: talkies

AnswerCrossword Clue
TALKIES1920s film innovation
TALKIES1920s Hollywood breakthrough
TALKIESSilents successors
TALKIESInnovation of the 1920s
TALKIESEntertainment innovation of the 1920's
TALKIESSilents' successors
TALKIESThey ended the silent film era
TALKIES"The Jazz Singer" et al.
talkiesmotion picture with accompanying synchronized speech, singing, etc.
talkiesTALKIE, a moving picture with synchronized sound