Answer:
all of the above
tell me if im wrong quick
The Parthian empire was a major Iranian political and cultural power in ancient Iran and Iraq. They were able to conquer civilizations like the Seleucid as they were able to seize Media and Mesopotamia from the Seleucid making them lose control of their eastern land and it was replaced by the Romans.
The 3/5 compromise said slaves only counted for 3/5 of a human which meant states with more states had a higher population.