If my memoery does not deceive me it is closely related to the tale of Macbeth. hope this helps you! :)
The idea behind the poems and the lines was that African-Americans were growing and were people of culture and that they were also intelligent and educated. This was the spirit of the Harlem Renaissance era and this is what the writers and artists of the time wanted to promote and raise awareness about.
No it is not an adjective because a adjective describes something like "pretty" or "fast" while verbs describe action. Started is an action so therefore is a verb.
