The Bolsheviks saw the Romanov children as potential rallying points for anti-revolutionary forces and feared they could be used as figureheads for a counter-revolution. By eliminating them, the Bolsheviks sought to eliminate any potential threats to their power and to prevent future uprisings from monarchist supporters.
The Bolsheviks killed them
Because they wanted to kill off the whole Romanov family so they're would never be another Tsar to rule Russia.
The last member of the Romanov family was Czar Nicholas the II. He was murdered by the Bolsheviks along with his family. There are still Romanov family members around today, like Grand Duchess Maria Vladimirovna and Nicholas Romanov, Prince of Russia. Also Czar Nicholas had sisters who had children and of course had children themselves.
The Bolsheviks/red army
Bolsheviks were a revolutionary political party in early 20th century Russia. They opposed the Romanov autocratic rule.
Anastasia Romanov was killed purely because she was a Romanov. When the Bolsheviks eventually came to power after Tsar Nicholas abdicated, Lenin ordered that Nick and his family were to be killed to end the Romanov dynasty and family line.
He was shot to death by Bolsheviks on July 17 1918
Nicholas Romanov II was the Czar at that time.
The abdication of Nicholas II in 1917. The Romanov family was later assassinated by the Bolsheviks in 1918
Nicholas Romanov II was Czar before the Russian Revolution.
That would be Nicholas II, who abdicated for himself AND his son in 1917. He and his family were killed by the Bolsheviks afterwards.
Olga Romanov died when she was 22 Tatiana Romanov died when she was 20 Maria Romanov died when she was 19 Anastasia Romanov died when she was 17 Alexei Romanov died when he was 13