The largest city of the medieval world — built of stone and water, then swallowed by the forest.
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Each new word is hidden in a sentence. Read it aloud and say what you think the bold word means from the rest of the sentence — then reveal it and see how close you were.
Read each part. After it, there's a quick comprehension check (try the questions from memory first), then one thing to discuss.
In the year 802, on a sacred mountain in what is now Cambodia, a Khmer prince named Jayavarman II declared himself a "universal ruler" and broke free of foreign control. That moment is usually taken as the birth of the Khmer Empire. Over the next six hundred years his successors built, on the flat plain north of a great lake, the largest city the world had yet seen: Angkor. At its peak it may have spread over a thousand square kilometres and held perhaps three quarters of a million people — a sprawling capital of wooden houses, markets, palaces and temples, bigger in area than any city in medieval Europe.
What made such a city possible, in a land of fierce seasons, was water. For half the year the monsoon poured down; for the other half, almost no rain fell at all. The Khmer answer was engineering on a colossal scale. They dug enormous reservoirs, called barays, by hand — one of them, the West Baray, was over eight kilometres long and held more than fifty million cubic metres of water. A web of canals and channels carried that water out across the fields for irrigation, allowing the farmers to grow rice all year round and feed a vast population. The empire, quite literally, was built on the control of water.
1. What event in 802 is usually treated as the start of the Khmer Empire?
2. Why was water management so important to a city like Angkor?
1. Prince Jayavarman II declared himself a "universal ruler" on a sacred mountain and broke free of foreign control.
2. The climate swung between heavy monsoon rains and a long dry season; reservoirs and canals stored monsoon water and used it for irrigation, so a huge population could grow rice and be fed all year.
The greatest of Angkor's rulers expressed their power in stone. In the early twelfth century, the king Suryavarman II began a temple unlike anything before it. Built over some thirty-seven years and dedicated to the Hindu god Vishnu, Angkor Wat was a mountain of carved stone surrounded by a moat so wide it looked like a square lake. It remains the largest religious monument on Earth. Its walls carry hundreds of metres of carving — armies marching, gods and demons pulling at a serpent, rows of dancing spirits — a record in stone of the kingdom's devotion and its myths.
Later in the same century, the empire nearly fell. A rival people, the Cham, attacked by river and plundered Angkor itself in 1177. Out of that disaster rose its most ambitious king, Jayavarman VII. He drove the invaders out, and then rebuilt on a scale never seen before — a new walled capital, Angkor Thom, with giant stone faces gazing out from its central temple, the Bayon. Unlike his predecessors he was a devoted Buddhist, and across the empire he built temples, roads and, the inscriptions claim, more than a hundred hospitals. Over the generations Angkor Wat itself shifted from a Hindu shrine to a Buddhist one, its statues quietly changing faith along with its kings.
1. Who built Angkor Wat, and which god was it first dedicated to?
2. What did Jayavarman VII do after the Cham attack of 1177?
1. King Suryavarman II built it in the early 1100s; it was first dedicated to the Hindu god Vishnu (and only later became a Buddhist site).
2. He drove the Cham out, then rebuilt on a huge scale — the new capital Angkor Thom and the Bayon — and, as a Buddhist king, built temples, roads and many hospitals.
No empire lasts forever, and Angkor's strength slowly became its weakness. The very water system that fed the city was fragile: canals silted up, walls broke, and a giant network like this needed constant repair by a strong central government. In the fourteenth and fifteenth centuries the climate turned against the Khmer — modern tree-ring studies show decades of harsh drought broken by years of violent flooding, exactly the conditions that could wreck such a system. At the same time, power and trade were shifting south, and a rising Thai kingdom pressed from the west, sacking Angkor in 1431. The court abandoned the old capital and moved nearer the coast, toward what is now Phnom Penh.
Angkor was never completely forgotten. Buddhist monks stayed on at Angkor Wat and kept it swept and living, which is why that one temple never fully fell silent. But around it, the sprawling wooden city simply dissolved, and the forest began to reclaim the rest — roots cracking the stone, trees rising straight through the ruins. For centuries the wider world barely knew the place existed. Then, in 1860, a French naturalist, Henri Mouhot, published a breathless account of the towers he had found half-buried in the jungle, and the West suddenly "discovered" what local people had never lost. Today Angkor Wat appears on Cambodia's flag, and well over a million visitors a year walk where the god-kings once stood — proof that an empire can vanish from the map and still refuse to be forgotten.
1. Give two reasons the Khmer Empire declined and Angkor was abandoned.
2. Why did Angkor Wat survive when so much of the city did not?
1. Any two of: the huge water system silted up and broke down; severe drought and flooding (shown by tree-ring studies) wrecked it; trade and power shifted south; a rising Thai kingdom sacked Angkor in 1431.
2. Buddhist monks stayed on and kept it in use, so it was never fully abandoned to the forest like the rest of the city.
This is a story of grand events — an empire rises, a city collapses, a forest takes over. When we want to write about events like these in a more formal, weighty way, English often turns the verb or adjective into a noun. That move is called nominalisation, and it is everywhere in serious history writing, essays and reports.
Turn the verb or adjective in brackets into a noun to complete each formal phrase from this story.
1. the of the empire (collapse — verb)
2. their to maintain the canals (fail — verb)
3. the of the city to the jungle (abandon — verb)
4. the gradual of Khmer power (decline — verb)
5. the of the water system (fragile — adjective)
1. collapse — the collapse of the empire
2. failure — their failure to maintain the canals
3. abandonment — the abandonment of the city to the jungle
4. decline — the gradual decline of Khmer power
5. fragility — the fragility of the water system
Rewrite each plain sentence using nominalisation, beginning with the words given. Keep the meaning the same.
1. Suryavarman II built Angkor Wat over 37 years. → The of Angkor Wat took 37 years.
2. The Cham attacked and plundered the city in 1177. → The of the city in 1177 nearly ended the empire.
3. Mouhot rediscovered the ruins in 1860. → The of the ruins in 1860 amazed the West.
4. The Khmer managed water brilliantly. → Their brilliant of water made the city possible.
1. construction — The construction of Angkor Wat took 37 years.
2. plunder (or plundering / sacking) — The plunder of the city in 1177 nearly ended the empire.
3. rediscovery — The rediscovery of the ruins in 1860 amazed the West.
4. management — Their brilliant management of water made the city possible.
Fill each gap with the noun form of the word in brackets. Read it aloud once you've finished — notice how formal it sounds.
The (rise) of the Khmer Empire depended on the careful (manage) of water. Yet the (fragile) of that system, together with the (decline) of central power, led to the eventual (abandon) of Angkor. Its (rediscover) in the nineteenth century turned a ruined capital into a national symbol.
rise · management · fragility · decline · abandonment · rediscovery
Notice how each noun packs a whole event into a phrase you can then build a sentence around — the hallmark of formal register.
Hold on to these noun forms — you'll reach for them in the Speak tab, where you'll narrate the rise and fall of something in your own words.
You've read the story and you have the words — so now the real thing is within reach. There's a full podcast episode that tells this story in much greater depth, in natural, real-speed English. It's optional: the lesson stands on its own without it.
From the Noiser podcast network. Hosted by historians, roughly 50 minutes. It plays in the page on the Noiser site, or search "Short History Of Angkor" on Spotify.
Play on Noiser →This is the heart of the lesson — do all of it out loud. The timer is there to keep you going: fill the time with detail rather than escaping it.
Tell the story of Angkor in your own words, as if to someone who has never heard of it. Move through the arc: the founding of the empire in 802 → the city built on water, reservoirs and irrigation → the construction of Angkor Wat and the god-kings → the decline, the drought and the sacking of 1431 → the abandonment and the forest reclaiming the ruins → the rediscovery.
Work in at least five key words (empire, temple, irrigation, reservoir, monsoon, veneration, sprawling, abandon, reclaim, dynasty) and at least three formal noun phrases (the construction of…, the collapse of…, the abandonment of…).
Angkor fell to a mix of pressures — a fragile water system, a changing climate, and rising rivals. Build an argument: when a great civilisation collapses, is it usually one big blow, or many small failures adding up? Use other examples you know — from history or from today — to support your view, and use nominalisation where you can.
Tell a story of your own choosing in the same spirit — the rise and fall of something. Use the formal noun forms (the rise of…, the decline of…, the collapse of…) to give it weight.
Stuck for an idea? Pick one of these and run with it: