Final answer:
The growth of artistic vitality for East African writers can be seen in the 1920s through the 1930s during the Harlem Renaissance. Langston Hughes was one of the prominent writers of this period.
Step-by-step explanation:
Harlem Renaissance and the Growth of East African Writers
The growth of artistic vitality for East African writers and their achievement of both local and international stature can be seen in the 1920s through the 1930s. This period was known as the Harlem Renaissance, a cultural movement centered in Harlem, New York City, which celebrated African American arts and literature. One prominent writer from this period was Langston Hughes, who became one of the most prolific writers of the Harlem Renaissance.