Answer:
The vast Persian Empire contained many conquered peoples with different beliefs and cultures, while the Greek civilization consisted of independent city-states that all had their own beliefs.
I think you worded your question incorrectly; the word to the definition an absence of government is: Anarchy
Because they needed the protection of the East India Company (EIC) to preserve the Mughal authority. After one century of prosperity the Mughal empire was facing its own decline. Different emperors raise to throne and did very little to save the empire from its collapse.
They faced several fights among claimers to the throne and eventually civil war. Much of the Mughal treasures were looted. In response, the British from the EIC gained trading rights, such as collect taxes, and ultimately political power.