Which of the following is the key difference between the u. s. system of government and a multiparty system of government?
-the election of a prime minister
-the organization of government under a constitution
- the formation of a "coalition" government
-the influence of a dictator

The correct answer should be -the formation of a "coalition" government

Thanks to the way US politics work, parties can't form coalitions, which means that multiple parties can't unite so as to gather voters together and win even though on their own they wouldn't be able to. That is because the US elections are won by one party unlike multiparty systems where one party can almost never win enough votes to rule alone.