The Roman Empire (Years 7–9) — History

Rome's rise from republic to empire, its army, roads, law and engineering, daily life, and eventual decline.

From a small city in Italy, Rome grew to rule an empire stretching from Britain to the Middle East and across North Africa. At its height it governed around 60 million people, and its influence lasted long after it fell.

Why this matters Roman roads, laws, calendars and buildings still shape our world. The way we organise governments and courts, and even many of our words, owe a great deal to Rome. Studying it shows how a state can rise, expand and eventually decline.

From republic to empire

For centuries Rome was a republic, governed not by a king but by elected officials and a senate. Around 27 BC this changed when Augustus became the first emperor. Under emperors, Rome enjoyed a long period of relative peace and prosperity that historians call the 'Pax Romana', or 'Roman peace'.

Army, roads and engineering

Rome's power rested on its highly disciplined army, organised into units called legions. To move soldiers and goods quickly, the Romans built a vast network of straight, paved roads — hence the saying 'all roads lead to Rome'. Their engineering was remarkable:

Aqueducts carried fresh water many miles into cities.
The arch and Roman concrete let them build huge structures like the Colosseum.
Public baths, sewers and heated floors improved daily life.

The rounded arch let Roman engineers build tall, strong structures such as aqueducts, using far less stone than a solid wall.

Law and daily life

The Romans developed detailed written laws, including the idea that an accused person's case should be judged on evidence. Many legal ideas in Europe today can be traced back to Roman law. In a typical city, wealthy families lived in large houses while most people lived in crowded flats, shopped at markets and watched games and chariot races.

Decline of the empire

By the AD 400s the western empire was weakening. Historians point to several causes rather than a single one: pressure from migrating peoples on the frontiers, civil wars, economic troubles and the sheer difficulty of governing such a huge territory. The western empire fell in AD 476, but the eastern half, later called the Byzantine Empire, continued for another thousand years.

Common exam mistake: writing that 'Rome fell in AD 476' as if the whole empire ended on one day for one reason. Only the western empire collapsed then, after decades of pressure; the eastern half survived as the Byzantine Empire for another thousand years. Always describe the fall as a gradual process with several causes, not a single event.

Exam technique: for a 'why did the Roman Empire decline' question, structure your answer around separate factors — frontier pressure, civil war, economic strain, the sheer size of the territory — rather than blending them into one paragraph. Examiners reward answers that clearly weigh multiple causes.

Put these events in order, earliest first:

Rome is a republic, governed by elected officials and a senate
Augustus becomes the first Roman emperor (about 27 BC)
The 'Pax Romana' brings a long period of peace and prosperity
Pressure from migrating peoples and civil wars weaken the frontiers (from the AD 400s)
The western empire falls (AD 476)