7. In the first hundred days of the Colosseum in Rome in 80 AD, over 5,000 animals were killed, including: elephants, tigers, lions, elks, hyenas, hippopotamuses, and giraffes.
8. The amount of people able to fit in the Colosseum is to be debated, but 45,000 is generally the accepted figure.
9. At the peak of the Roman Empire, the size of Rome was about the size that the US is now.
10. The empire was know together by 18,000 of roads.
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