The New Economic Policy (NEP) was a strategic plan introduced by Vladimir Lenin in 1921 that aimed to revive the struggling Soviet economy after the Russian Civil War. It marked a temporary retreat from full state control of the economy, allowing for some private enterprise and market mechanisms while still maintaining a strong state presence. The NEP was crucial in stabilizing the economy and gaining support from the peasantry, who were discontented with the harsh policies of War Communism.