What did nicholas ii do for russia?

At the beginning of World War I, Russia’s armies performed poorly. In response, Nicholas II appointed himself commander-in-chief, so he could take direct control of the military from Grand Duke Nicholas, against the advice of his ministers. Nicholas II spent much of late 1915 through August 1917 away from Tsarskoe Selo in Saint Petersburg.

He was forced to abdicate which ended more than 300 years of Romanav in Russia