There was no “sudden collapse” in 476 AD. All that happened was Odoacer ( a Romanized German chieftain who held the actual power) deposed the figurehead Emperor Romulus Augustulus in that year. Odoacer had already had the power before this deposition.
There was no “sudden collapse” in 476 AD.
Everyone except you says 476.
“Alex, I pick “Cronos is wrong” for $1000”