As europe came under attack from multiple invading groups during the middle ages, which group launched the most devastating attacks across the continent?

The Vikings

Explanation:

The Vikings were Scandinavians and between the 8th and 11th century of the middle ages (5th to 15th century) raided most part of Europe causing much devastation in the continent.

many citizens are in danger of contracting a food-borne illness.

more people are living with chronic illnesses.

pathogens are becoming stronger and harder to defeat.

edge nuity