For the most of the 20th century Russia was a Communist country with Socilaistic central planned economy and ruled by one party.
Basically a president is someone who takes care of america and watches over us. He/She is like the parent of The United States Of America
Hope that helps Please feel free to ask me questions or give me a better definition to dumb down:)
In this passage, the type of warfare being described by the author is "chemical warfare".
I honestly have no idea on the answer Anyway thanks for the points
