Among these were the War of the Union, a citizen revolt against the excesses of the monarchy, led by Valencia as the capital of the kingdom—and the war with Castile, which forced the hurried raising of a new wall to resist Castilian attacks in 1363 and 1364.
Na eni strani se je zmanjšalo prebivalstvo zaradi več epidemij kuge (1348 in naslednjih letih), na drugi strani zaradi serije vojn in nemirov, ki so sledili.