The great French empire that Napoleon created eventually fell after the unsuccessful invasion of Russia. Why was the invasion considered a great disaster for Napoleon?
There was a massive air attack by the Russians that wiped out most of Napoleons army
Russia's scorched-earth policy and cold winter wiped out most of Napoleons army
The Battle of the Bulge wiped out most of Napoleons army
The newly formed United States allied with Russia to wipe out most of Napoleons army