major similarities between persian and roman empiresits for a essay assigment

There are many similiarities between the ancient Persian
empire and that of the ancient Romans.  First, both empires grew up in the same general
area; that being around the Mediterranean Sea.  They both had dealing with many of the
same cultures: Greeks, Egyptians, etc. They both conquered through the use of a massive
military force... the largest anyone had seen for their respective time periods.  Both
had very structured command centers for their military.  Both empires conquered the
"known world" in their time (relative term; but speaks to their effective military
prowness).