What invention most increased the influence of films on culture and society in the twentieth century?
A. the addition of newsreels
B. the creation of feature-length films
C. the innovation of sound
D. the cinematograph
C. the innovation of sound
The innovation of sound in films had a significant impact on the way in which movies were made and experienced. It allowed for dialogue, music, and sound effects to be incorporated into films, enhancing the overall viewing experience for audiences. Sound also played a crucial role in the development of genres such as musicals and dramas, shaping the cultural influence of movies in the twentieth century. This innovation greatly increased the popularity and influence of films on society.