When Did the Romans Leave Britain?
The Roman Empire controlled Britain for nearly 400 years, starting in AD 43. But in AD 410, the Romans packed up and left. This wasn't a quick decision—it happened because the empire faced huge problems back home.
The Roman Empire Was Falling Apart
By AD 410, the Roman Empire was in serious trouble. Enemies were attacking from all directions, especially from the north and east. The empire was so big and stretched so thin that it couldn't defend everywhere at once. Rome itself had even been attacked by invaders in AD 410—the very year the Romans left Britain.
Think of it like having too many jobs at once: if you're trying to look after the house, the garden, and the pets all alone, something has to give.
Soldiers Were Needed at Home
The Roman army was spread impossibly thin. The empire needed soldiers desperately to defend Italy and other crucial parts of the empire. The soldiers protecting Britain were like spare hands that were needed urgently elsewhere. By AD 410, the Roman Emperor Honorius basically told the people of Britain that they were on their own and would need to defend themselves.
Britain Wasn't as Important Anymore
Compared to other parts of the empire, Britain wasn't the most valuable place. It was cold, distant, and took months to reach by ship. The empire had to choose which parts to protect, and Britain came lower on the list. With enemies closing in everywhere, Rome had to focus on keeping the heart of the empire safe.
Think of it like a school choosing which sports teams to fund: if money is tight, you might keep the popular teams going but let the club that costs lots to run fade away.
What Happened After?
Once the Romans left, Britain was unprotected. Slowly, Anglo-Saxon peoples from what is now Germany and Denmark began to settle and take over. The ordered, organized world the Romans had built gradually disappeared. Britain entered what's sometimes called the Dark Ages, when life became harder and less connected to the wider world.