Answer:
The fact that several nomadic empires, such as the Mongol Empire, have been short-lived is mainly based on the lack of defense structures built in a planned, strategic and orderly manner.
Due to their nomadic nature, these empires and civilizations did not tend to establish new cities or urban centers, with which their conception of territorial expansion was the mere possession of the territory. Therefore, in the event of enemy attacks, the territories were not sufficiently protected to repel these types of attacks. Thus, these empires could not sustain their power because they did not have the necessary building structures for it.
If there had been no Ancient Greek civilization we'd be behind in literature, art, technology, science and much more. The Greek gave the world new ideas and an individual right in self government. The world right now would probably be in the 1619 A.D not 2019 A.D.
In Early Philadelphia a lot happened like there were houses that needed to be built also colonies were hard to keep up with.
C) Individual States
A guiding principle of the Articles was to preserve the independence of the states. The Articles created a weak central government, therefore they only received the powers which previous colonies had recognized as belonging to the parliament.
Hope this helps :)
