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.

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles

gender discrimination race discrimination hard