Answer:
The United States based its political system on representation of the people, while the Soviet Union based its system on rule by a few.
Step-by-step explanation:
Disclaimer: The answer could vary depending on what timeline we are discussing. If we are talking about WWII then the following answer should be correct:
The United States based its political system on representation of the people, while the Soviet Union based its system on rule by a few.
We had democracy (we elected people to represent our say) whereas, soviet union has full on dictator (Stalin) who decided what's up.
This is my best guess since no timeline was provided, hope its correct