Italy became a nation-state in 1861 when the city-states of the peninsula, along with Sardinia and Sicily, were united under King Victor Emmanuel II on 17 March 1861.
1861年3月17日国王维克托?伊曼纽尔二世将半岛内的各城邦及撒丁岛和和晌魑骼锿（Regno delle Due Sicilie）合并成为意大利王国（Regno d"Italia）, 建立了民族国家。
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On March 17th 1861, King Victor Emmanuel II of Piedmont-Sardinia signed into law a bill in which he took for himself the title King of Italy.