It was primarily the development of agriculture that led to the development of the first city states, since this allowed for there to be a surplus of food, which allowed people to have labor specialization.
Idk that i hope i can help some thing else
The western empire had lost most of its political, religious, and economic power
Because they managed to lost the power to use their original language and replaced by another
hope this helps
The historians could be wrong without proper proof to back up their so-called "facts". Therefore, they would need to study and know what they're talking about, before presenting their statements as facts.