History
London has a 2000-year-old history. In the first century A.D. the Romans came to Great Britain and founded a settlement near the mouth of the River Thames . They called it Londinium.
After they left London about four hundred years later, the Saxons, a Germanic tribe , settled in the area. In the centuries that followed, Vikings repeatedly attacked the city .
When William the Conqueror invaded Britain in 1066 London was already the biggest town on the island. William made the city its capital and crowned himself king in Westminster Abbey on Christmas Day. He also built the Tower of London to protect the city from invaders .
During the Middle Ages, London grew steadily. It became one of Europe's trading centres, and its population grew to about 200,000 by the beginning of the 17th century . Then disaster struck the city twice. The Great Plague of 1665 killed about a fourth of the city's population. A year later, the Great Fire burned down most of the older part of the city. After this tragedy, the city was rebuilt with houses made of stone and brick instead of wood.

London in the 16th century
Image: Nathaniel Whittock, Public domain,
via Wikimedia Commons
At the beginning of the Industrial Revolution, almost a million people lived in London. It was the largest city in the world and the centre of the British Empire, which, at that time, was growing at a rapid pace .
As more and more people moved to the city from the countryside, London needed more and better transportation systems. In 1863, it became the first city in the world to start an underground railway system .
During the Second World War, Nazi Germany bombed London heavily . 30,000 people were killed. The rebuilding of the city after World War II caused many problems. City planners did not want London to grow endlessly in all directions. A green belt was created around the city to stop its expansion . Outside this green area, new towns emerged. They became small cities which many people moved to later on.

London during the bombings of World War II
Image: New York Times Paris Bureau Collection, Public domain,
via Wikimedia Commons
In the second half of the 20th century, London faced many problems that other megacities also have: air pollution, traffic jams and unemployment.
In the 1970s and 80s the Docklands in the eastern part of London were rebuilt. They were once part of the world's largest harbour . The Docklands lost their importance as the British Empire lost its colonies. In the past decades, new office buildings , shopping centres and a new airport have been created in an attempt to revitalize this region.

The London Docklands
Image: Kleon3, CC BY-SA 4.0,
via Wikimedia Commons
Words
- A.D. = after the birth of Christ
- air pollution = air becomes dirty and almost impossible to breathe
- attempt = try
- brick = a hard block of baked clay used for building houses
- capital = the most important city of a country ; where the government meets
- cause = lead to, produce
- century = a period of a hundred years
- crown = special event in which you become king or queen
- decade = period of ten years
- disaster = a sudden event that causes a lot of destruction and damage
- emerge = come up , build
- empire = group of countries controlled by one ruler
- endlessly = here : uncontrolled
- expansion = growth
- found - founded = to create something new
- green belt = area of land around a city where building houses is not allowed
- harbour = place where ships load and unload products
- heavily = very hard
- invade = to enter a country with an army and take control of it
- mouth = where a river becomes broader and flows into the sea
- plague = very serious illness which killed millions of people in the Middle Ages
- protect = defend from enemies
- rapid pace = very quickly
- repeatedly = over and over again
- revitalize = to design something new and make it modern so that more people will move there
- settle = to start living in a new place
- settlement = a new town in a place where very few people have lived before
- steadily = slowly, little by little
- struck = hit
- trading centre = place where you buy and sell things
- traffic jam = long line of cars that move along very slowly on a road
- unemployment = to be out of work or have no job