The Mongol Empire lasted only 100 years.
The Mali Empire lasted a little more than 300 years.
D.) assembly line process of production.
An armistice is b) an agreement between warring nations to stop fighting. An armistice has been officially defined as "a formal agreement of warring parties to stop fighting. It is not necessarily the end of a war, since it may constitute as a cessation of hostilities while an attempt is made to negotiate a lasting peace."
Basically it's impossible to add to the question you have to prove
Answer: as a century progressed, suburbs drained people and their resources from the city.
Explanation: