Iberian.
The two modern nations formerly entirely incorporated into the Holy Roman Empire were France and Germany. Part of norther Italy was also an integral part of the empire for many years, as was western Poland and all of modern Austria, as well as the Czech Republic.
The period of peace begun under Augustus is known as the Pax Romana.
A collection of kingdoms under one powerful ruler is known as an empire. Examples of empires can be seen throughout history, the Roman Empire, the Ottoman empire, the Mongol Empire, and the British Empire, just to name a few.
The Roman Empire reached its greatest extent under Trajan in 116 AD.
Charlemagne united most of Western and Central Europe under the Carolingian Empire, which was the first new empire in Europe after the collapse of the Western Roman Empire.
Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.Christianity was made the official religion of the Roman empire in 380 AD under emperor Theodosius I.
it united its territories under a central government
it united its territories under a central government
Trajan was the emperor at the height of the roman empire.
Constantinople was the capital of the Roman Empire under Emperor Constantine the Great around 330 AD.
The Roman Empire reached its greatest extent in 116 AD under the emperor Trajan.