Having been ruled by several countries over the years, Milanese culture is eclectic and borrows elements from other countries, including Austria, Spain and France. Similarities between these places and Milan can be noticed through the language, architecture, cuisine and general culture of these countries. In the 18th century, Austrian rule stimulated much of the city's cultural, political, social and economic life, resulting in the founding of numerous important artistic institutions, as well as contributing to the city's architecture. After the unification of Italy in 1861, Milan became a major industrial and cultural centre in the new Kingdom; in the late 19th century onwards, the city held the position of the country's economic capital, whilst Rome was the seat of the government, making it the country's main political and administrative hub. In the fin-de-siècle period and the early 20th century, the city became an important architectural centre (highly influenced by Art Nouveau, additionally highlighted by the 1906 World Exposition, which was held in the city), and remained a prominent city with regard to a major intellectual scene. After World War II, Milan was highly affected by the Italian economic miracle, or "il boom", and attracted a wave of immigrants from Southern Italy, who sought work in the prosperous city. By then an important centre for finance and design, the metropolis grew into a major fashion capital in the 1980s. In the 2000s Milan still remains one of the country's most important cultural, media and economic centres, regarded as the nation's second city; its prominence is extended worldwide, and it is recognised as an Alpha global city. The city additionally hosted the Expo 2015. Milan is traditionally referred to as the "moral capital" of Italy, especially due to the city's perceived work ethic.