The black death was a. the attack by mongol and tatar horsemen on europe during the 13th century b. a disease that killed millions of europeans during the 14th century c. the series of civil wars between the grandsons of charlemagne for control of his empire d. a succession of extremely cold winters during the 11th century

the black death was B) a disease that killed millions of europeans during the 14th century.

in the 14th century there were some fleas or something that hopped onto some rats and gave them a disease known as the bubonic plague aka the black death and the rats basically went out and broke into peoples houses and ate their food and infected the people.

idk

explanation: idk

increase in population