If you are talking about aztecs it is because they believed the sun gods need human blood to fuel them
True is was about 12 foot tall and 4 foot wide mass of reinforced concrete
The Roman Colosseum was started to be built in 70 AD, and it officially opened in 80 AD. The Romans wanted to increase their prestige, but also to make their people happy. One way of doing that was of building a huge Colosseum. The finished building was like an amphitheater, with seats around a central point. It was also used to hold meetings and other types of plays that didn't include fighting, like drama.
Have a nice day! :)
Oregon country, this is the Pacific Northwest modernly know as Washington Oregon and parts of California. hope I helped you out!!! brainliest would be much appreciated because I am trying to rank up!!