in 1348, the black death spread throughout britain, killing about a third of england's population. it affected both the rich and poor, both those in towns and in the countryside. the main symptoms were buboes in the armpit or groin, chest pains, and a fever. when the black death was caught, people died within days. it was spread through coughs and sneezes or rat flea bites (black rats were carried overseas by ships, so ships were quarantined for 40 days before landing).