Many of the people who have come to Mexico City have ended up living in "surrounding" areas, since life in the city itself is very fast paced and dense, meaning that many people wish to enjoy the benefits of the city without being there directly.
This excerpt explains why the Articles of Confederation needed to be fixed or replaced with a different constitution. The excerpt goes over several different flaws in the Articles of Confederation including:
1) No national courts to solve issues between individuals from different states.
2) No consistency in laws- In other words, states got to interpret the laws whatever way they wanted.
3) No way to enforce court rulings from state to state.
These weaknesses, plus others, resulted in the need for a new constitution. The US Constitution replaces the Articles of Confederation and is still what we follow today.
The force driving behind European Imperialism in Africa was when the Europeans took advantage of advances in technology to enhance their ability to acquire resources from Africa.
Answer:
The Step Pyramid of Djoser! Hope this helps :)