Roman Empire (officially: Impero d'Italia) is a contitutional monarchy located in southern Europe, consisting of Northern Apennine Peninsula, separated to the north by the Alps and Dynaric Alps to the East. It is a democratic unitary state with the title of Emperor being herditary, but having only representative functions, with real power. It was around 1000 BCE. In the beginnnig it expanded through conquest, but when it controlled all of Italy, the conqest was halted, because of increasing difficulties to rule the empire.