What was the capital of the Achaemenid empire?

qwizzer, It was a time of conquer or be conquered. Pacifists did not survive. I am not saying it is good. But judging the people by today's standards is unfair.

I don't understand why Alexander is still referred to as The Great. From all I've seen, heard, or read, all he really accomplished in the end. Was to leave a path of destruction and death. So many society's and vast civilisations, wiped out. Such a pity!