Italy's Borders in 1550: A Fragmented Peninsula

In 1550, "Italy" was a geographical expression—not a state. The peninsula comprised multiple sovereign entities. Borders of the major Italian states touched these neighbors:

Major Italian States & Their Borders (1550)

• Duchy of Milan (Spanish Habsburg): France (W), Swiss Confederacy (N), Venice (E), Genoa (S)
• Republic of Venice: Milan (W), Austria (N), Ottoman Empire (E—Dalmatia, Albania), Papal States (S)
• Republic of Genoa: Milan (N), France (W—via Monaco), Papal States (S/E), Mediterranean (S)
• Duchy of Ferrara (Este): Venice (N), Papal States (S/E), Mantua (W)
• Duchy of Mantua (Gonzaga): Milan (W), Venice (E), Ferrara (E), Papal States (S)
• Papal States: Venice (N), Ferrara (N), Mantua (N), Florence (N), Naples (S), Adriatic (E)
• Duchy of Florence (Medici, becoming Grand Duchy 1569): Papal States (S/E), Siena (S), Lucca (W), Modena (N)
• Republic of Siena: Florence (N), Papal States (E), Piombino (W)—annexed by Florence 1555
• Kingdom of Naples (Spanish Habsburg): Papal States (N), Mediterranean (E/W/S)
• Duchy of Savoy: France (W), Milan (E), Swiss Confederacy (N), Genoa (S)—crossed Alps

External Powers on the Peninsula

• Spain (Habsburg): Direct rule: Milan, Naples, Sicily, Sardinia, State of Presidi (Tuscany coast).
• France: Claims on Milan, Genoa, Naples; alliances with Ferrara, Siena, Pope (intermittent).
• Holy Roman Empire (Austrian Habsburg): Suzerainty over imperial fiefs (Milan, Mantua, Ferrara, Tuscany nominally).
• Ottoman Empire: Naval dominance Adriatic/Ionian; raids on coasts; vassals in Albania.

Key Missing Modern Borders

Slovenia, Croatia, Austria did not exist as such. Slovenia/Croatia = Habsburg (Carniola, Istria) + Venice (Dalmatia) + Ottoman. Austria = Archduchy of Austria (Habsburg hereditary lands). San Marino existed (tiny republic, Papal enclave). Papal States were a major territorial player—not just an enclave.

1550 Italy: Spanish hegemony rising, French intervention recurring, Italian states maneuvering for survival. Unification: 310 years away.