What developments enabled brandenburg prussia austria and russia to emerge as major powers in the seventeenth century?

The development that enabled Brandenburg Prussia, Austria and Russia to emerge as the major powers in the seventeenth century is because of the work of the Hohenzollern dynasty in which led to their emergence in which improved the standing of the army.

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

the answer is c.richard m. nixon