Rome was a big big empire. Now it is kind of small. A long long time ago the christians monks used to drink beer and they put it in there water to clean it. They had a waterwheel. The waterwheel is a very good helping machine. When making beer you crush the ingredient. They used slaves for every thing because they had a lots of slaves. the camshaft was used a lot back then they had it connected to the waterwheel and it who’d hit the hammer and it who’d go up.

Why were the Christian monks able to help preserve and restore civilization after the Roman Empire collapsed? What were some of the inventions they used to do so, and how did they work?