Monaco /mɒnəkoʊ/, officially the Principality of Monaco (French: Principauté de Monaco (French pronunciation: [prɛ̃.si.po.te.d(ə).mɔ.na'ko]) ; Monégasque: Principatu de Múnegu; Italian: Principato di Monaco; Occitan: Principat de Mónegue), is a sovereign city state, located on the French Riviera in Western Europe. Bordered by France on three sides, with one side bordering the Mediterranean Sea, its center is about 16 km (9.9 mi) from Italy, and is only 13 km (8.1 mi) north east of Nice, France. It has an area of 1.98 km (0.76 sq mi), and a population of 36,371, making Monaco the second smallest, and the most densely populated country in the world. Monaco has a land border of only 4.4 km (2.7 mi), a coastline of 4.1 km (2.5 mi), and a width that varies between 1.7 km (1.1 mi), and 349 metres (382 yards). The highest point in the country is a narrow pathway named Chemin des Révoires on the slopes of Mont Agel, in the Les Révoires district, which is 161 metres (528 feet) above sea level. Monaco's most populated Quartier is Monte Carlo, and the most populated Ward is Larvotto/Bas Moulins. After a recent expansion of Port Hercules, Monaco's total area is 2.05 km (0.79 sq mi), with new plans to extend the district of Fontvieille, with land reclaimed from the Mediterranean Sea.
Monaco is a principality governed under a form of constitutional monarchy, with Prince Albert II as head of state. Even though Prince Albert II is a constitutional monarch, he still has immense political power. The House of Grimaldi have ruled Monaco, with brief interruptions, since 1297. The official language is French, but Monégasque, Italian, and English are widely spoken and understood. The state's sovereignty was officially recognized by the Franco-Monegasque Treaty of 1861, with Monaco becoming a full UN voting member in 1993, after much political debate. Despite Monaco's independence and separate foreign policy, its defence is the responsibility of France. However,