Multicameral

Modern multicameralism

Of the ancient assemblies in Europe, only Finland's survived to see the 20th century. As the armies of Revolutionary France conquered much of Europe in the name of liberalism and popular sovereignty, most countries’ newly established or re-established legislative assemblies were structured after either the (originally) unicameral French National Assembly or the bicameral British Parliament. Since the 19th century, tricameral legislatures have been a rare constitutional curiosity, with the overwhelming majority of assemblies having one or two chambers.