Analysis of information sources in references of the Wikipedia article "이탈리아 동맹" in Korean language version.
In 1455, most of the five powers and other smaller ones signed a mutual security agreement, the Italic League, which guaranteed the existence of signatory states and called for common action against outsiders. These arrangements led to nearly 50 years of peace on the peninsula. Managing the peace was largely the work of Lorenzo "the Magnificent", the Medici ruler of Florence who believed that maintaining a balance among the five powers was better policy than trying to eliminate enemies. This was the first conscious balance of power policy in a post-medieval state system.
|title=에 외부 링크가 있음 (도움말)The death of Lorenzo (1492) marked not only the end of Florentine power but also that of the Italic League, of which he had been one of the supporters.
Not Charles, who died three years later, but Louis XII, his successor, crossed the Alps again in 1499; and his first victim was the duke of Milan. The revengeful Venetians joined the French in the kill; the Italic League was gone beyond recall.