The fall of Baghdad was Hulegu's greatest military accomplishment.
No
The Mesopotamians
The answer will depend on what the "myan civilation" (whatever than means) was or is! I suggest some checking of your spelling may be a good idea.
Baghdad (currently is the capital of Iraq)
chief ruler
olmec
a sentence for baghdad is the people live in Baghdad
baghdad
Because
because cavemen made civilation
they collapse in the 900s