In the medieval Europe, how exactly was the Black Plague stopped?
The Black Plague never really stopped. It may have receded in some parts of Europe, but its second wave dates from 1346 until 1840 when it finally calmed down thanks to hygienic and health precautions. Its worst outburst is called the Black Death, which raged in Europe between 1346 and 1353. The combination of quarantine, personal hygiene and cremation of dead bodies helped overcome this outburst.