where is it located?
Northern Italy
Mediolanum
Mediolanum, the ancient city where Milan now stands, was originally an Insubrian city, but afterwards became an important Roman city in northern Italy. 
what was the capitol of the roman empire Constantinople what led to the empire's fall? The death of Nepos and abolition of the Western Empire by Zeno what crisis did it face in the third century? After assassination of Alexander Severus, the Roman Empire sank into a 50-year period of civil war was there any need for the restoration? Yes what does tetrarchy as per the empire mean? This system effectively divided the Empire into four major regions, as a way to avoid the civil unrest that had marked the 3rd century. what were the names of the regions ? Mediolanum, Trier, Sirmium and Nicomedia. were there any archaeological discoveries made at the second last place? Yes, at Glac, a palace is being excavated how is the legacy of the first mentioned region is carried forward? The city name is commemorated in the Mediolanum Forum at Assago is it a town? Yes
wiki:7407683
Mediolanum [SEP] Introduction
Mediolanum, the ancient city where Milan now stands, was originally an Insubrian city, but afterwards became an important Roman city in northern Italy. The city was settled by the Insubres around 600 BC, conquered by the Romans in 222 BC, and developed into a key centre of Western Christianity and informal capital of the Western Roman Empire. It declined under the ravages of the Gothic War, its capture by the Lombards in 569, and their decision to make Ticinum the capital of their Kingdom of Italy. During the Principate the population was 40,000 in AD 200; when the city became capital of the Western Roman Empire under emperor Maximian (r.