That is pretty simplistic. Germany also had a weak constitution that allowed the Reichstag to make drastic changes to it. Even to this day Germany still allows for small parties but now has a limit of minimum 5% votes before a party gets into the Bundestag.
The current US system creates red versus blue states. 150 years ago that led to a civil war. Where is the moderation in that?Multiparty governance leads to factionalism
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