Milan-Venice Confrontation (1470s)

Timeline

1. 1471–1476Milan · MilanMilanese Duke Galeazzo Maria Sforza pursued a hardline rule, repeatedly clashing with Venice over border tariffs, river navigation, and control of subject cities. Both sides relied on condottieri (such as Colleoni) for small-scale wars, and tried to win over Florence, the Papal States, and others to counterbalance each other.
2. 1476–1478Milan · MilanGaleazzo was assassinated in a Milanese church in December 1476; his son Gian Galeazzo was young, and his uncle Ludovico Sforza (the Moor) gradually took control of the regency. Venice closely watched Milanese succession developments, sometimes supporting the regent and sometimes contacting anti-Ludovico forces, worsening political instability in Lombardy.
3. 1477–1480Northern Italy · ItalyDuring the War of Ferrara Venice allied with Florence against the Papal States, while Milan's Ludovico maneuvered among the parties, sometimes courting Venice and sometimes maintaining contacts with Naples and the Papacy. Milan-Venice relations fluctuated with the course of the war and the Ottoman threat (such as the indirect impact of the 1477 Burgundian inheritance crisis), forming a typical Italian diplomatic 'balancing act.'