The February revolution, also known as the February uprising or March revolution, was a political revolution in Russia that took place in 1917. It led to the end of the Romanov dynasty and the establishment of a provisional government. Here is a detailed explanation of the February revolution:

Causes:
- The failure of the Russian army in World War I
- The shortage of food and supplies due to the war effort
- The high casualties and loss of life in the war
- The poor economic conditions and inequality in Russia
- The autocratic rule of Tsar Nicholas II and his government

Events:
- On February 23, 1917, International Women's Day, women workers in Petrograd (now St. Petersburg) went on strike and marched through the streets demanding bread and an end to the war
- The protest grew and spread to other workers and soldiers, leading to a general strike and mass demonstrations
- The government responded with force, but the protests continued and even the soldiers began to join the demonstrators
- On February 27, the soldiers mutinied and joined the protesters, and the police and military forces began to defect to the revolutionary side
- Tsar Nicholas II, who was away from the capital, was forced to abdicate on March 2, ending the Romanov dynasty and leaving the country in the hands of a provisional government

Impact:
- The February revolution paved the way for the October revolution later that year, which brought the Bolsheviks to power and established the Soviet Union
- It also led to significant social and political changes in Russia, including the establishment of a democratic government and the granting of rights to workers and peasants
- The revolution had a significant impact on World War I, as Russia withdrew from the war and left the Allied powers without a major ally

In conclusion, the February revolution was a pivotal moment in Russian history, marking the end of the Romanov dynasty and the beginning of a new era of political and social change.