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The State Duma in the Russian Empire and Russian Federation corresponds to the lower house of the parliament.
Boyar Duma was an advisory council to the grand princes and tsars of Muscovy.
The State Duma (Russian: Государственная дума (Gosudarstvennaya Duma), common abbreviation: Госдума (Gosduma)) in the Russian Federation is the lower house of the Federal Assembly of Russia (parliament), the upper house being the Federation Council of Russia.