Which of the following explain why some people use 1918 as the starting of the Russian Civil War?
1. The Russian Civil War officially began in 1918 with the execution of the Romanov family and the Bolshevik seizure of power, marking the beginning of a period of violent conflict between various factions in Russia.
2. The Russian Civil War escalated in 1918 as anti-Bolshevik forces, known as the White Army, began to fight against the Bolshevik Red Army for control of the country.
3. 1918 marked the year in which the Russian Civil War spread beyond Russia's borders, with foreign intervention from countries such as Britain, France, and the United States supporting the White Army against the Bolsheviks.
4. The signing of the Treaty of Brest-Litovsk in 1918, which ended Russia's participation in World War I and led to territorial losses, further fueled the conflict between competing factions within Russia, leading to the full-scale civil war.