What was the Romanov Dynasty and why was it significant? Name at least 3 leaders and their accomplishments:

The Romanov Dynasty was the ruling dynasty of Russia from 1613 to 1917. It was founded by Michael Romanov and came to an end with the abdication of Tsar Nicholas II during the Russian Revolution.

1. Peter the Great (ruled 1682-1725) - Peter the Great is known for his efforts to modernize Russia and bring it into the Western world. He established the Russian Empire, reformed the army and navy, and founded Saint Petersburg.

2. Catherine the Great (ruled 1762-1796) - Catherine the Great expanded the Russian Empire by conquering new territories and promoting the arts and education. She also established the Hermitage Museum in Saint Petersburg.

3. Alexander II (ruled 1855-1881) - Alexander II is known for his reforms, such as the emancipation of the serfs in 1861, which freed millions of Russian peasants from feudal bondage. He also implemented judicial and military reforms during his reign.