List the events that led to the collapse of the French Empire. (The era of Napoleon I).

Napoleon’s empire was shaken after failures on the Russian side. The battle of Borodino and the battle of Maloyaroslavets finally knocked out the French army from its forces, so it had to retreat along the Smolensk road. The empire began to collapse as Napoleon lost his foothold as an army. Many people, even in their own state, stopped supporting him. The crisis was growing in the country due to military costs. Large-scale failures began after crossing the Neman. Foreign campaign of Alexander 1 finished off the situation.