Early Modern

In the 14th and 15th centuries, northern-central Italy was divided into a number of warring city-states, the rest of the peninsula being occupied by the larger Papal States and the Kingdom of Sicily, referred to here as Naples. Though many of these city-states were often formally subordinate to foreign rulers, as in the case of the Duchy of Milan, which was officially a constituent state of the mainly Germanic Holy Roman Empire, the city-states generally managed to maintain de facto independence from the foreign sovereigns that had seized Italian lands following the collapse of the Western Roman Empire. The strongest among these city-states gradually absorbed the surrounding territories giving birth to the Signorie, regional states often led by merchant families which founded local dynasties. War between the city-states was endemic, and primarily fought by armies of mercenaries known as condottieri, bands of soldiers drawn from around Europe, especially Germany and Switzerland, led largely by Italian captains.^[48] Decades of fighting eventually saw Florence, Milan and Venice emerged as the dominant players that agreed to the Peace of Lodi in 1454, which saw relative calm brought to the region for the first time in centuries. This peace would hold for the next forty years.
The Renaissance, a period of vigorous revival of the arts and culture, originated in Italy thanks to a number of factors, as the great wealth accumulated by merchant cities, the patronage of its dominant families like the Medici of Florence,^[49][50] and the migration of Greek scholars and texts to Italy following the Conquest of Constantinople at the hands of the Ottoman Turks.^[51][52][53] The Italian Renaissance peaked in the mid-16th century as foreign invasions plunged the region into the turmoil of the Italian Wars. The ideas and ideals of the Renaissance soon spread into Northern Europe, France, England and much of Europe. In the meantime, the discovery of the Americas, the new routes to Asia discovered by the Portuguese and the rise of the Ottoman Empire, all factors which eroded the traditional Italian dominance in trade with the East, caused a long economic decline in the peninsula.

Christopher Columbus discovered America in 1492, opening a new era in the history of humankind

Following the Italian Wars (1494 to 1559), ignited by the rivalry between France and Spain, the city-states gradually lost their independence and came under foreign domination, first under Spain (1559 to 1713) and then Austria (1713 to 1796). In 1629–1631, a new outburst of plague claimed about 14% of Italy's population.^[54] In addition, as the Spanish Empire started to decline in the 17th century, so did its possessions in Naples, Sicily, Sardinia, and Milan. In particular, Southern Italy was impoverished and cut off from the mainstream of events in Europe.^[55] In the 18th century, as a result of the War of Spanish Succession, Austria replaced Spain as the dominant foreign power, while the House of Savoy emerged as a regional power expanding to Piedmont and Sardinia. In the same century, the two-century long decline was interrupted by the economic and state reforms pursued in several states by the ruling élites.^[56] During the Napoleonic Wars, northern-central Italy was invaded and reorganised as a new Kingdom of Italy, a client state of the French Empire,^[57] while the southern half of the peninsula was administered by Joachim Murat, Napoleon's brother-in-law, who was crowned as King of Naples. The 1814 Congress of Vienna restored the situation of the late 18th century, but the ideals of the French Revolution could not be eradicated, and soon re-surfaced during the political upheavals that characterised the first part of the 19th century.

Italian unification

Main articles: Italian unification, Kingdom of Italy, and Military history of Italy during World War I

Victor Emmanuel meets Giuseppe Garibaldi near Teano

Italian Alpini troops during World War I in 1915.

The Altare della Patria in Rome, resting place of the Unknown Soldier (more than 650,000 Italian soldiers died on the battlefields of World War I)

The birth of the Kingdom of Italy was the result of efforts by Italian nationalists and monarchists loyal to the House of Savoy to establish a united kingdom encompassing the entire Italian Peninsula. In the context of the 1848 liberal revolutions that swept through Europe, an unsuccessful war was declared on Austria. The Kingdom of Sardinia again attacked the Austrian Empire in the Second Italian War of Independence of 1859, with the aid of France, resulting in liberating Lombardy.
In 1860–1861, general Giuseppe Garibaldi led the drive for unification in Naples and Sicily,^[58] allowing the Sardinian government led by the Count of Cavour to declare a united Italian kingdom on 17 March 1861. In 1866, Victor Emmanuel II allied with Prussia during the Austro-Prussian War, waging the Third Italian War of Independence which allowed Italy to annex Venetia. Finally, as France during the disastrous Franco-Prussian War of 1870 abandoned its garrisons in Rome, the Italians rushed to fill the power gap by taking over the Papal States.
The Constitutional Law of the Kingdom of Sardinia the Albertine Statute of 1848, was extended to the whole Kingdom of Italy in 1861, and provided for basic freedoms of the new State, but electoral laws excluded the non-propertied and uneducated classes from voting. The government of the new kingdom took place in a framework of parliamentary constitutional monarchy dominated by liberal forces. In 1913, male universal suffrage was adopted. As Northern Italy quickly industrialised, the South and rural areas of the North remained underdeveloped and overpopulated, forcing millions of people to migrate abroad, while the Italian Socialist Party constantly increased in strength, challenging the traditional liberal and conservative establishment. Starting from the last two decades of the 19th century, Italy developed into a colonial power by forcing Somalia, Eritrea and later Libya and the Dodecanese under its rule.^[59]
Italy, nominally allied with the German Empire and the Empire of Austria-Hungary in the Triple Alliance, in 1915 joined the Allies into the war with a promise of substantial territorial gains, that included western Inner Carniola, former Austrian Littoral, Dalmatia as well as parts of the Ottoman Empire. The war was initially inconclusive, as the Italian army get struck in a long attrition war in the Alps, making little progress and suffering very heavy losses. Eventually, in October 1918, the Italians launched a massive offensive, culminating in the victory of Vittorio Veneto. The Italian victory^[60][61][62] marked the end of the war on the Italian Front, secured the dissolution of the Austro-Hungarian Empire and was chiefly instrumental in ending the First World War less than two weeks later.
During the war, more than 650,000 Italian soldiers and as many civilians died^[63] and the kingdom went to the brink of bankruptcy. Under the Peace Treaties of Saint-Germain, Rapallo and Rome, Italy obtained most of the promised territories, but not Dalmatia (except Zara), allowing nationalists to define the victory as "mutilated". Moreover, Italy annexed the Hungarian harbour of Fiume, that was not part of territories promised at London but had been occupied after the end of the war by Gabriele D'Annunzio.

Fascist regime