A .OPEC began an oil embargo of the United States.
Answer:
industrial pollution, sewage pollution
b. the author is saying that america doe not care about the countries specifically saying that he only cares where his food comes from
With rivers cities grew with receiving enough resources from the rivers like water and fish for survival. With rivers they can ride to different cities and trade. Rivers are a very important part of nature. They can give you so many resources for survival.
Civil war within China has happened
hope this helps
