Grafschaft Nizza
Since 1848, Menton and Roquebrune, then integral parts of the principality of Monaco, declared themselves to be free towns and were occupied by a Sardinian garrison. Following the cession by the Kingdom of Piedmont-Sardinia of the Duchy of Savoy and of the County of Nice to France in 1860, the inhabitants of Roquebrune and Menton, towns considered in the circumstances as forming part of the County of Nice, chose by referendum to be reunited with France.