(lc)which african-american inventor received numerous patents for improvements on the functioning of steam engines?

the answer is Elijah McCoy

for (a) a tragedy was considered a main greek drama and it influenced alot of others. for (b) the actors in greek theater were named as aeschylus, sophocles, and euripides and sometimes playwrites. for (e) in a semi-circular theater called the "orchestra.". we'll the question was explain where the namer actors originated.

hope this : d

a.that is my answer.

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