The Harlem Renaissance refers to the efforts of African American artists, writers and musicians of the 1920s and 30s to tell ___.

Stories?

Explanation:

African Americans have stories to tell just like other POC, so they used music and dance as a way to do that.

(I hope I'm right)

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).