Who took over russia and what type of social system did they establish

Vladimir Ilyich Lenin and his  Bolshevik Revolution overthrew the provisional government of Alexander Kerensky. The provisional government came to power after the February Revolution resulted in the Russian monarchy being overthrown in March 1917. They Established Communism as their new form of a government and social system.

answer: i think it might be the last one

explanation:

theodore roosevelt challenged william to a duel, whoever won, got their policy sent to congress. it ended up in a stalemate, and both men were injured and sent to the hospital.