Exhausted by generations of conflict, Milan and Venice negotiated a treaty at Lodi that other major Italian powers soon joined, forming the Italic League. The settlement froze existing borders and established a fragile balance of power across the peninsula, allowing city-states to redirect resources toward the arts and commerce rather than constant warfare — a peace that indirectly helped fuel the flowering of the Renaissance.
For decades the Visconti and later Sforza dukes of Milan had warred against Venice's mainland ambitions, dragging Florence, Naples, and the Papacy into shifting alliances and expensive campaigns. By 1454, both Milan under Francesco Sforza and Venice, drained by the fall of Constantinople the previous year and wary of Ottoman expansion, wanted an end to fighting closer to home.
The treaty they signed at Lodi, a small town on the Adda River, fixed territorial boundaries and bound the signatories to mutual defense. Florence, Naples, and the Papal States joined within months, creating the Italic League, an early experiment in collective security among rival states that nonetheless remained deeply suspicious of one another.
The peace held, imperfectly, for roughly forty years until the French invasion of 1494 shattered it. In the interval, courts from Florence to Milan to Venice poured wealth into patronage — Renaissance painting, architecture, and scholarship flourished partly because rulers were no longer bankrupting themselves on mercenary armies. Historians still debate whether Lodi caused this cultural surge or merely coincided with it, but the correlation is hard to ignore.
Key people: Francesco Sforza