Rome was sacked by the Gauls in 387 BC. That's why we only have the legends about its founding and no written records from before that year.
Good catch! I'd forgotten about that. Say, they had a pretty good 797 year run going there!
Washington DC was sacked by the British in 1814. Somehow I don' tthink we'll beat the Roman's 797 year record, that would mean we make it to 2612 without someone taking Washington.
There are days I wonder if we'll make it 7 months!