Long ago, a city grew by a river. 

Long ago, a city grew by a river. 
At first, the city was very small. It was about the size of a park. 
After that, the Romans built it again. The city grew very fast. It became a very large place. 
Romans even built a big wall. This wall went around the city. It helped keep the people safe.
Londinium was a very important place. It is where London is today.
Londinium was a big city in Roman Britain. 

Early on, the city was quite small. It was about the size of Hyde Park. Around 60 AD, a queen named Boudica led a revolt. The Roman soldiers had to leave the city. During the fight, the city was burned down. Later, the Romans came back and rebuilt it. 
The city grew very fast after that. It became the largest city in Britain. Many people lived there to trade and work. Some think 60,000 people lived in the city. It had large buildings like a forum. A forum is a public square for meeting.
Between 190 and 225 AD, Romans built a wall. This wall went around the land side of the city. It helped keep the people safe. 
Londinium was a very important city in Roman Britain. 

Building the city happened in several stages. First, the Romans arrived in Britain around 43 AD. Historians think the settlement began shortly after that, around 47 to 50 AD. One of the oldest things found is a timber drain from 47 AD. 
History shows that the city faced many hard times. In 60 or 61 AD, a queen named Boudica led a rebellion. Her people, the Iceni, fought against the Roman forces. The Romans had to leave the city, and Londinium was burned down. 
At its height, Londinium was a huge and busy place. In the 2nd century, it may have had 30,000 to 60,000 people. 

Today, we can still see traces of Londinium in our modern world. The name of the city changed over time to become London. Many of the streets we use today follow the paths of the old Roman roads. The old city wall still marks the area we call the City of London. 
Londinium was the major capital of Roman Britain for most of the Roman occupation. 

The city's origins are still a subject of debate among modern historians. Some believe it began as a settlement around 47–50 AD, shortly after the Claudian invasion. Others suggest it started earlier, as a defensive enclosure in 43 AD. One of the earliest confirmed structures is a timber drain dated to 47 AD. 
Londinium faced a major crisis during the middle of the 1st century. In 60 or 61 AD, Queen Boudica led a rebellion of the Iceni people. The Roman forces were forced to abandon the settlement during this uprising. As a result, the city was razed, or burned to the ground. 
By the 2nd century, Londinium reached its peak of importance and size. It likely replaced Camulodunum, which is modern-day Colchester, as the provincial capital. The population is estimated to have been between 30,000 and 60,000 people.
As the Roman period continued, the city changed in size and appearance. During the second half of the 2nd century, Londinium began to shrink in population. Much of the city was eventually covered in dark earth. This dark earth was a byproduct of urban life, made of household waste, manure, and ceramic debris. Between 190 and 225 AD, the Romans constructed a large defensive wall on the landward side. 
Archaeologists continue to find remarkable evidence of daily life in ancient Londinium. They have uncovered elaborate buildings in suburbs like Southwark, which featured fine mosaics and frescoed walls. 

The legacy of Londinium is visible in the very name of the modern city. While the exact origin of the name is unknown, it likely came from a Brittonic word. It was not a direct source for the English word "London" due to linguistic changes called i-mutation. However, the city's influence remains through its geography. Many modern streets still follow the paths of the original Roman roads. The city remains a central point of connection, just as it was nearly two thousand years ago.
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