Provence-Alpes-Côte d'Azur daily basis, but cities are investing in public transport networks such as Marseille's subway (2 lines) and tramway (3 lines), Aubagne's tramway (1 line) and Nice's tramway (1 line). Other networks existed at the beginning of the 20th century in smaller cities such as Aix-en-Provence, Avignon, La Ciotat and Toulon but are now gone. Major universities of the region include the Aix-Marseille University, the University of Toulon, the University of Avignon and the University of Nice Sophia Antipolis. Other towns have higher education classes but no Universities. Provence-Alpes-Côte d'Azur Provence-Alpes-Côte d'Azur (; ; ; PACA) is one of the 18
Economy of France partner of the US. The economic disparity between French regions is not as high as that in other European countries such as the UK, Italy or Germany, and higher than in countries like Sweden or Denmark, or even Spain. However, Europe's wealthiest and second largest regional economy, Ile-de-France (the region surrounding Paris), has long profited from the capital city's economic hegemony. The most important "régions" are Île-de-France (world's 4th and Europe 2nd wealthiest and largest regional economy), Rhône-Alpes (Europe's 5th largest regional economy thanks to its services, high-technologies, chemical industries, wines, tourism), Provence-Alpes-Côte d'Azur (services, industry, tourism and wines), Nord-Pas-de-Calais