Passage: The 14th century saw a series of catastrophes that caused the European economy to go into recession. The Medieval Warm Period was ending as the transition to the Little Ice Age began. This change in climate saw agricultural output decline significantly, leading to repeated famines, exacerbated by the rapid population growth of the earlier era. The Hundred Years' War between England and France disrupted trade throughout northwest Europe, most notably when, in 1345, King Edward III of England repudiated his debts, contributing to the collapse of the two largest Florentine banks, those of the Bardi and Peruzzi. In the east, war was also disrupting trade routes, as the Ottoman Empire began to expand throughout the region. Most devastating, though, was the Black Death that decimated the populations of the densely populated cities of Northern Italy and returned at intervals thereafter. Florence, for instance, which had a pre-plague population of 45,000 decreased over the next 47 years by 25–50%. Widespread disorder followed, including a revolt of Florentine textile workers, the ciompi, in 1378.

Question: What was interrupted because of the war?
trade routes