USA
Has a two party dictatorship. Must be registered to a party before voting. Republican and Democratic party was originally one party. It was called Democratic-Republican party. Center politics does not exist in USA. You must either be left wing or right wing.
Code:
https://en.wikipedia.org/wiki/Democratic-Republican_Party
Parliamentary
Multi party system with usually 8 parties or more. Where all voters are represented left, center and right. Easier to swap out parties. And no parties has domination over the other. It is more balanced and prevents a majority dictatorship. The President and kings are neutral states of head. While the prime minister and politicians are advisors of the president or monarch.
In USA you only have 2 parties. Left and right. Socialist or liberal. The center is not represented in American politics. Center politics means a combination of leftist and rightist ideology combined.
Does not need to be registered to a party. You can vote for whoever you wishes.
For Example
Kingdom of Norway
Kingdom of Sweden
Kingdom of Denmark
Or usually called Social democratic nations. Are all center politics. In Social democracy the politicians combines the ideology of socialist and libertarians to create the center. In USA this type of combination does not exist because of your two system dictatorship. Socialist democratic nations has mixed economy. This means!
Private and public sector exist in harmony with each other. The rich uses private services. While the poor uses public services. This is called social democracy.
There are private hospitals.
There are public hospitals.
There are private schools.
There are public schools.
There are private libraries.
There are public libraries.
There are public museum.
There are private museum.
There are private military industry.
There are public military industry.
There are private insurance for the rich.
While the poor are covered by public insurance and welfare.
Usually there is a lot of propaganda in USA about social democracy.
The Right wing usually say social democracy is a capitalist nation. Which is wrong cause its called mixed economy. Capitalism means there will only be private ownership. The left usually calls social democracy a communist nation. Which is also wrong. Because in communism the state owns everything.
Social democracy means
Leftist (Socialist politics).
Center politics (Combination of left and right wing politics).
Rightist (Liberal and Libertarian conservative politics).
Are all represented in politics.
Social democracy has mixed economy. Which means public and private sectors exist side by side with each other. Social democracy can only be achieved with a multi parliamentary system which represents different people from all walks of life. While the two party system. Only represent left and right while the center is neglected.
In USA you can clearly see that the left side are becoming more and more communist.
While the right side are becoming more and more libertarian.
The left calls for abolition of capitalism and wants to implement communism.
The right calls for full capitalism and wants every thing to be privately owned.
While the Center does not exist.
In order to have socialist democratic nation. USA must have center politics.
Because social democracy means Left wing + Right wing ideas combined.
Left wing + Right wing = Center politics which creates the social democratic nation.
Europe = Social democracy (center politics). Center politics exist because of multi party system.
USA = Left (Socialist and communist) vs Right (Liberal, conservative libertarians). Center politics does not exist because of two party system.
Legal Corruption
In USA there is something called Lobby and lobbying. This means private business can buy up politicians with money. This also means foreign nations can also buy up politicians with money. This is called lobbying or also known as legal corruption in Europe.
In Europe all parties are financed by the public and there are no lobbying groups that can buy up politicians. Once your party gets into the parliament. Everything will be financed by the state and public. In USA all parties are privately financed. That is the biggest different between USA and European parliamentary system.