Why did russia let Finland to become independent?

Russia allowed Finland to become independent in 1917 primarily due to its own political turmoil following the Bolshevik Revolution. The new Bolshevik government sought to focus on internal issues and reduce the empire's territorial holdings, viewing Finland's independence as a means to weaken the former imperial structure. Additionally, Finland's desire for self-determination and the prevailing nationalist movements made it politically advantageous for Russia to grant independence rather than suppress it, which could have led to further instability.