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Trieste is a city and a seaport in northeastern Italy. It is situated towards the end of a narrow strip of Italian territory lying between the Adriatic Sea and Slovenia, which lies approximately 10–15 km (6.2–9.3 mi) south and east of the city. Croatia is some 30 km (19 mi) to the south. Trieste is located at the head of the Gulf of Trieste and throughout history it has been influenced by its location at the crossroads of Latin, Slavic, and Germanic cultures. In 2018, it had a population of about 205,000 and it is the capital of the autonomous region Friuli-Venezia Giulia. The metropolitan population of Trieste is 410,000, with the city comprising about 240,000 inhabitants. Trieste was one of the oldest parts of the Habsburg Monarchy, belonging to it from 1382 until 1918.

Rome is the capital city and a special comune of Italy (named Comune di Roma Capitale). Rome also serves as the capital of the Lazio region. With 2,879,728 residents in 1,285 km2 (496.1 sq mi), it is also the country's most populated comune. It is the third most populous city in the European Union by population within city limits. It is the centre of the Metropolitan City of Rome, which has a population of 4,355,725 residents, thus making it the second or third most populous metropolitan city in Italy depending on definition.

Rome is located in the central-western portion of the Italian Peninsula, within Lazio (Latium), along the shores of the TiberVatican City (the smallest country in the world) is an independent country inside the city boundaries of Rome, the only existing example of a country within a city; for this reason Rome has sometimes been defined as the capital of two states.Rome's history spans 28 centuries. While Roman mythology dates the founding of Rome at around 753 BC, the site has been inhabited for much longer, making it one of the oldest continuously occupied cities in Europe. The city's early population originated from a mix of Latins, Etruscans, and Sabines. Eventually, the city successively became the capital of the Roman Kingdom, the Roman Republic and the Roman Empire, and is regarded by many as the first ever Imperial City and metropolis.

It was first called The Eternal City (Latin: Urbs Aeterna; Italian: La Città Eterna) by the Roman poet Tibullus in the 1st century BC, and the expression was also taken up by Ovid, Virgil, and LivyRome is also called "Caput Mundi" (Capital of the World). After the fall of the Empire in the west, which marked the beginning of the Middle Ages, Rome slowly fell under the political control of the Papacy, and in the 8th century it became the capital of the Papal States, which lasted until 1870. Beginning with the Renaissance, almost all popes since Nicholas V (1447–1455) pursued a coherent architectural and urban programme over four hundred years, aimed at making the city the artistic and cultural centre of the world. In this way, Rome became first one of the major centres of the Italian Renaissance, and then the birthplace of both the Baroque style and Neoclassicism.

Famous artists, painters, sculptors and architects made Rome the centre of their activity, creating masterpieces throughout the cityIn 1871, Rome became the capital of the Kingdom of Italy, which, in 1946, became the Italian Republic. As of 2020, Rome is ranked as an Alpha global city by the Globalization and World Cities Research Network. In 2019, Rome was the 11th most visited city in the world, third most visited in the European Union, and the most popular tourist destination in Italy. Its historic centre is listed by UNESCO as a World Heritage Site. Host city for the 1960 Summer Olympics, Rome is also the seat of several specialized agencies of the United Nations, such as the Food and Agriculture Organization (FAO), the World Food Programme (WFP) and the International Fund for Agricultural Development (IFAD).