I would like to refer you to this website, it has everything you are asking about--
http://thediplomat.com/2015/01/china-the-influence-of-history/
Hope this helps!
You need physical map to check the amazon river
Answer:
Tectonic plates move.
Explanation:
Earthquakes are natural disasters that occur because of movement in tectonic plates.
Because of the moving liquid below earths mantle