Many forces predisposed Ku Klux Klan members to accept the group’s exclusionary message without much analysis. These forces included all of the following EXCEPT: a. the 1921 and 1924 Immigration acts. b. "100 percent Americanism," which developed during World War I. c. the 1915 film release of Birth of a Nation. d. the rise of fundamentalism. e. Coolidge’s economic policies.

Option E,  Coolidge's economic policies, is the right answer.

Explanation:

A group of White supremacist hate group that targeted the African American community was known as  Ku Klux Klan. In the history of the United States, the Klan has existed in three different eras.  The first Klan employed terrorism against politically active African Americans.  All three movements tried to purify American society.

the answer is option a.