A dominating nation with extensive territories and a powerful ruler such as Rome's is known as an empire.
The empire is located at the center of the city in Rome, currently known as Italy. According to a legend, the empire was founded in 753 b.c by the brothers Romulus and Remus.
It is considered empire any sovereign state which works as a group of nations or people that are governed by an emperor or another type of monarch. The territory and population of an empire tends to be of greater extent than the one of a kingdom.