What happened to tsar in World War 1?

During World War I, Tsar Nicholas II of Russia faced significant military defeats and widespread social unrest due to the war's toll on the economy and the populace. In 1917, these pressures culminated in the February Revolution, which forced him to abdicate the throne. He and his family were placed under house arrest and later executed by Bolsheviks in July 1918, marking the end of the Romanov dynasty and the Russian Empire.