Lenin faced many challenges in introducing communism to Russia after seizing power. Politically, he faced opposition from left-wing groups like the SRs and Mensheviks who wanted to share power. When elections for the Constituent Assembly showed the Bolsheviks did not have a majority, Lenin dissolved it. Socially, Russia had deep inequality between the aristocracy and peasants. Economically, Russia was still industrializing and suffered greatly from World War 1 and the civil war eroded its resources further. Diplomatically, the Treaty of Brest-Litovsk forced Russia to give up land and Lenin had to fight a civil war against opponents supported by foreign allies.