Why was the civil rights movement considered a cross-cultural movement?

Movements for civil rights in the United States include noted legislation and organized efforts to abolish public and private acts of racial discrimination against African Americans and other disadvantaged groups between 1954 and 1968, particularly in the southern United States.

the following best describes postwar era writers in their works:

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.

as general terms,  indian territory,  the indian territories, or  indian country  describe an evolving land area set aside by the  united states government  for the relocation of  native americans  who held  aboriginal title  to their land. in general, the tribes ceded land they occupied in exchange for  land grants  in 1803. the concept of an indian territory was an outcome of the 18th- and 19th-century policy of  indian removal. after the  civil war(1861–1865), the policy of the government was one of  assimilation.