The development of Carolingian minuscule was an important advance in the field of

Sergei Diaghilev was influential as a(n):

a) composer b) impresario c) painter d) music critic

The projection speed for sound films was first standardized at

A. 50 feet per minute. B. 36 frames per second. C. 30 minutes per reel. D. 24 frames per second.