# The Industrial Revolution

Business I · Economic History · https://tryals.app/learn/business-i/the-industrial-revolution

## The Great Escape

Between 1760 and 1840, Britain broke the Malthusian trap. Productivity outran population, and per-capita income surged: $\approx \$1{,}000$ in 1700 to $\approx \$2{,}700$ in 1870.

**The escape bundle**

| Ingredient | Why it mattered |
|---|---|
| Cheap **coal** | Energy stopped competing with food |
| **Steam engine** | Converted coal into mechanical work |
| Textile machines | First mass mechanisation |
| **Institutions** | Patents and property rewarded risk |

The **factory system** replaced putting-out, centralising powered machinery. Agriculture fell; manufacturing rose. Britain became the first majority-urban nation, sparking the **demographic transition** as death rates fell before birth rates.

## Why Britain First?

Robert Allen's thesis explains the puzzle: $\frac{\text{high wages}}{\text{cheap energy}} \Rightarrow \text{incentive to mechanise}$. 

British wages were high and coal was cheap. Substituting labour with coal-powered machines was profitable in Lancashire, but not in low-wage Bengal, where machines would never pay back.

**Key Contrasts & Pitfalls**

| Concept | Definition / Reality |
|---|---|
| **Great Divergence** | Pomeranz's debate on China vs Britain |
| Pitfall | It was not British genius, but price structures |

Joel Mokyr stresses the **industrial Enlightenment**: networks linking science to craft. No monocausal theory works; energy, wages, and institutions aligned for a contingent revolution.

## Practice questions

6 of this lesson's 14 practice questions, with answers. The full set is in the app.

### 1. Allen argues the spinning jenny was invented in Lancashire rather than Bengal, where cotton skills were older and deeper. What made Britain the profitable place to mechanise?

A. Bengal lacked the capital markets needed to finance machinery
B. British inventors had better access to scientific knowledge
C. Its unusual price ratio: high wages and cheap coal
D. British patent law protected inventors, which Indian law did not

**Answer:** C. Its unusual price ratio: high wages and cheap coal

**Why:** Invention responds to relative prices, and the jenny paid for itself only where wages were high relative to fuel, the same device was a bad investment in Bengal. It reframes the Industrial Revolution as an induced response to a local price structure rather than a burst of British genius.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/allen-argues-the-spinning-jenny-was-invented-in-lancashire-rather

### 2. According to Allen, the spinning jenny was invented in Lancashire rather than Bengal because:

A. The British government ordered the invention
B. Bengali workers lacked the intelligence to invent machines
C. High Lancashire wages made the machine pay
D. Bengal had no cotton industry

**Answer:** C. High Lancashire wages made the machine pay

**Why:** Allen's point is about incentives, not ability: the machine had to pay back its cost by saving wages. Where wages were low, the payback never arrived, the same invention simply wasn't worth building.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/according-to-allen-the-spinning-jenny-was-invented-in-lancashire

### 3. Which structural changes accompanied the Industrial Revolution?

A. Agriculture's share of employment fell
B. Urbanisation accelerated
C. Population declined due to factory conditions
D. The demographic transition began

**Answer:** A. Agriculture's share of employment fell; B. Urbanisation accelerated; D. The demographic transition began

**Why:** Agriculture shrank, cities grew, and the demographic transition (death rates fell, then birth rates) began. Population surged, not declined, despite harsh factory conditions.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/which-structural-changes-accompanied-the-industrial-revolution

### 4. Order the key inventions and events of the Industrial Revolution.

**Answer:**

1. Newcomen's atmospheric engine (1712)
2. Spinning jenny (1764)
3. Watt's separate condenser (1769)
4. Power loom widely adopted (1800s)
5. Railways connect major cities (1830s)

**Why:** Pumping engines, textile machines, improved steam, powered weaving, railways, each invention created demand for the next.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/order-the-key-inventions-and-events-of-the-industrial-revolution

### 5. The Industrial Revolution had a single clear cause that historians agree on.

**Answer:** False

**Why:** No monocausal explanation works. Energy, technology, institutions, markets, culture, and geography all contributed, the debate is about relative weights, not a single cause.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/the-industrial-revolution-had-a-single-clear-cause-that-historians

### 6. Allen explains British industrialisation by factor prices and Mokyr by a culture of useful knowledge. Why are these rival explanations rather than complementary ones?

A. Because one is economic history and the other intellectual history, which never conflict
B. Because Allen writes about Britain and Mokyr about continental Europe
C. Because they cover different centuries with no overlap
D. Because they disagree about what was scarce.

**Answer:** D. Because they disagree about what was scarce.

**Why:** They differ on what was binding. If wages were the trigger, the same culture without high wages industrialises nowhere, which is a testable disagreement, not a division of labour.

Page: https://tryals.app/practice/business-i/the-industrial-revolution/allen-explains-british-industrialisation-by-factor-prices-and-mokyr