What caused plagues? filthy conditions streets water animals

ANSWER:

Animals causes plagues.

EXPLANATION:

Plague is a serious infectious disease caused by a type of bacterium named Yersinia pestis. These bacteria are usually found in rats, rodents and other mammals. In humans, it is transmitted through fleas. It is also known as Black Plague or Black death, as it can kill a person affected by it, if not treated carefully. There are 3 forms of plague, in which "bubonic plague" is the most common and dangerous one.

It is the second answer

Individual rights and freedoms protect every person in canada whether they're citizens or not. the only right, non-citizens don't have is the right to vote.