How is clean fresh water produced in nature?

Water produced in nature is due to water cycle. Water from seas , rivers and open bodies of water gets evaporated and then overtime turns into rain. This rain runs into the vast lands and goes inside it. The water that goes underground are filtered by the natural pile of filters in land and then turns into fresh water.

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Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.