1) how did the movies and their stars influence popular culture?

americans copied the styles of speech, dress, and behavior of their favorite movie stars.
americans protested the negative racial and cultural stereotypes presented in movies.
americans were eager to buy radios to listen to news stories and music.

2) which of the following describes race relations in the 1920s?

race riots occurred in several cities across the country.
the influence of the ku klux klan declined.
the government supported federal anti-lynching laws.

3) what was a theme of literature during the harlem renaissance?

the experience of being black in a white world
the influence of radio on popular culture
the goals of prohibition

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Right choices:

Q 1  -  Americans copied the styles of speech, dress, and behavior of their favorite movie stars.

Q 2 -  Race riots occurred in several cities across the country.

Q 3 -  The experience of being black in a white world.

Explanation:

1. Hollywood artists are often seen  as role models and many people love to look like their favorite movie star, dress as they do, or imitate their speech and manners, etc.

2. Racial riots, a wave of lynching of blacks by white mobs , and the execution of Italian immigrants Saco and Vanzetti are some of events of the 1920s.

3. As an example, novelist Jessi Redmond Fauset explored the issues of black identity in white-dominated Manhattan in his 1924 novel There Is a Confusion.  

the answer is a, salt plain

they both built pyramids.