All of the following became a very popular source of communication and entertainment in the 1920’s in America except A. Talkies
B. Radio
C. Magazines
D. Television

answer:    

a.

explanation:

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

the term is einsatzgruppen

a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”