The answer is: b. The Soviet Union fell apart
Before Gorbachev's reforms exist, several territories in soviet union was united under one principle of communism.
When the Gorbachev's reforms were created, the soviet union started to adopt some of democratic and free market value that adopted by countries in western hemisphere.
When this happen, the bind that united territories in the soviet union no longer exist. This became one of the factors that caused the soviet union to fell apart.
Presidential government is one of the two kinds of government classified by the relationship between their legislative and executive agencies. The written constitution that provides for the separation of powers between branches is the specific trait gives the United States a presidential system of government.
Answer:
Niccolo Machiavelli.
Explanation:
He was an Italian diplomat, politician, and philosopher. He is most known because of his book called "The Prince". A book that analyzed different political systems. To him is granted the negative connotation that today has the words "politics" and "politician" along with the term Machiavelli.
In his book, he advises how to rule successfully but sometimes doing bad things on purpose.
I hope this answer helps you.