Groups such as the Visigoths, Vandals, Angles, Saxons, Franks, Ostrogoths were tribes of people that helped bring about the collapse of rome.
Answer:
Irrigation highly depends on water sources in order for it to work. Without clean water, crops will die and wither. And polluted water causes filthy and contaminated trade routes, which are unsafe to travel across. Also, education has water fountains in the buildings (not sure now cuz of corona but clean water is used in school buildings.
Explanation:
I know this isn't an answer, but...
Do you have a question? I can't help you if you don't. I don't see any attachments so if you wanted to attach something then you should try to re-do your question maybe.
