Fleas living on black rats. Fleas, and the fleas spread on rats. Close quarters living (Castles, cramped city's due to walls) helped make it spread even faster.
yes, and rats spread it.
They do not know the exact cause of the black death but it was carried by rats because of fleas and it spread so rapidly because of trade
The Black Death spread across Europe at 4km
Black Death or The Black Plague was spread by fleas that were on rats. The Industrial Revolution could be the cause of its rapid spreading, but the cause is actually disputed by many scientists and historians. Many think it spread just because of how contagious it was.
Actually, fleas did. They spread on rats which attacked humans.
black death spread in Europe. black death killed 75 to 200 million people.
yes, black death was spread in whole Europe. Russia also got black death.
black death was spread by Yersinia pestis bacterium. Rats and fleas help to spread it even more.
Black Death started in China. And it spread to Europe.
The Black Death was spread by fleas and rats. ik..gross
Black Death was started in Mongol army camps. It spread the whole world via Mongol army attacks.
To kill the remaining living viruses and bacteria.