The coliseum has never been built in London. That's the Globe theatre you're thinking of. :-)
brick and ciment
The Colosseum was built by emperor Vespasian.
vespasian
Emperor Vespasian
There was no fire damage in the coliseum. If you are asking about the great Fire of Rome while Nero was emperor the coliseum didn't exist at that point. The palace of Nero was built over the area that was destroyed and the area where the coliseum is built was his lake.
look on google
2000 years
March 16, 1960
during the ancient greek times
As the Romans built the Colosseum, you would have to say it was the Roman society that built it.
Completed under Titus, 72 AD.