1. What period is referred to as the Middle Ages?

The Medieval period!!

Explanation:

It was also known as the dark ages due to the overall terrible quality of life during this time ( Mostly plague)

But it's one of my favorites.

anyhow , I  hope this helps you! Have a fantastic rest of the day!

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)