Final answer:
Borodino was an epic battle fought on the way to Moscow during Napoleon's invasion of Russia, which ended with heavy casualties and opened the path to Moscow for the French.
Step-by-step explanation:
Borodino was an epic battle during Napoleon's invasion of Russia. On September 7, 1812, the French and Russian forces clashed, resulting in approximately 70,000 casualties. Although the Russians ultimately retreated, this battle did not mark the end of Napoleon. The French captured Moscow but found it deserted and burned, leaving them without supplies in the approaching winter. Napoleon's most definitive defeat came at the Battle of Waterloo in 1815, after which he was exiled to St. Helena.