Answer:
In my opinion, skyscrapers have a negative effect on modern life.
Explanation:
I think there are multiple reasons that skyscrapers have a negative affect. But one is that there are usally multiple businesses inside of them, wich means that a large amount of people need to get there, wich leads to more cars and other transportation. Wich then causes air polution.
(don't know if this was the type of answer you were looking for.)
3 G's, gold, glory, & God was their motivation
True, they trade for items that they don’t have or have access to. They also do redundancy trading in case of crop failure. Trading also increases the bonds between two tribes.
Hope you learned something new!! ^v^