War Communism was the initial economic system implemented in Russia after the 1917 revolution to combat problems caused by civil war. It involved strict state control over production, labor, and distribution of resources. However, War Communism was a disaster that devastated the Russian economy and population. In 1921, Lenin replaced it with the New Economic Policy (NEP) which took a more capitalist approach and allowed private enterprise and market forces to spur economic growth, while maintaining state control over key industries. However, the NEP did not fully solve Russia's economic problems following the devastation of World War I and the civil war.