an analytical essay is sometimes called an expository essay
The same thing that happened in the 19th century, "The Great Stink". The name is real and it describes an event from the past which would repeat if they started throwing waste again. The river would become so polluted that disease and contagion would begin to spread. In the 19th century, it was cholera. Now, nobody knows.
I see the theme by him making up his own life by doing what he do is right not wrong
In a business letter or any formal letter you will traditionally use the salutation of.
A. Dear Senator Smith,
This is only slightly different from Dear Senator Smith - however the comma is an important element grammatically that should be included in a formal letter.