What were the main reasons the Russian revolution took place

Economically, widespread inflation and food shortages in Russia contributed to the revolution. Militarily, inadequate supplies, logistics, and weaponry led to heavy losses that the Russians suffered during World War I; this further weakened Russia's view of Nicholas II. They viewed him as weak and unfit to rule.

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

i think it was   tsar alexander ii