The belief that African-Americans possessed a distinct heritage for which they should be proud was referred in the 1920s as:

Black Nationalism

Explanation:

The belief that African-Americans possessed a distinct heritage for which they should be proud was referred to in the 1920s as BLACK NATIONALISM

Black Nationalism often referred to as Negró Nationalism is a belief that was common during the Jazz Age, between the 1920s to 1930s.

During this period, there was a belief among the black community which centered on sociopolitical, and economic freedom of African American communities.

It specifically focuses on the resistance of assimilation of white culture and maintenance of black culture and identity

yes.

explanation:

because it let the japanese know who had the upper hand in the war.