Constitutional Monarchy: A form of government where a monarch is limited by a constitution, granting certain rights and powers to elected officials.
Duma: The legislative body established in Russia after the 1905 Revolution as part of political reforms. It represented various social groups but had limited power under Tsarist rule.
Provisional Government: The temporary government formed after Tsar Nicholas II abdicated in 1917. It aimed at implementing political reforms but faced challenges from other factions.