Also political scientists from eminent universities in the US and Britain were heavily involved in the renewal of democracy in Germany. With the Germans they designed a system that is more democratic than those that existed in their own countries. The system is designed to operate as a coalition government. No one party can dominate, but because of the coalition system mainstream centrist views get properly represented while extremists get some presence in the Bundestag but are unlikely to be needed to form a coalition and will never be in a position to dominate it, like they have done in the US.
It’s worked out pretty well for the Germans, wouldn’t you say?
The US is a two party state. So extremists just need to infiltrate one party to corrupt the system, especially if the other party is not providing competent opposition.
Currently the security of democracy in the US, and therefore the balance of power between Russia, China and the US which is the basis of world peace in so much as it exists today, rests in the constitutional procedures of the Republican Party and the Democratic Party as much as it does in the US constitution, who sets those rules? Do Americans memorise them in school?