The battle between the Merrimack and the monitor showed that

Battle of the Monitor and Merrimack, also called Battle of Hampton Roads, (March 9, 1862), in the American Civil War, naval engagement at Hampton Roads, Virginia, a harbour at the mouth of the James River, notable as history's first duel between ironclad warships and the beginning of a new era of naval warfare.

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