When Adam Smith published the Wealth of Nations, Britain was still a largely rural and placid place.
But the Industrial revolution was already getting started, and standards of life were beginning to rise.
One obstacle was that trade with other nations was still tightly controlled.
Merchants in the home market had persuaded the government of the day to impose heavy duties and taxes on all foreign imports, in order to insure themselves a protected market.
One of the results was to turn Britain into a nation of lawbreakers.
Smuggling was a national pastime: brandy, wines, tobacco, anything with a heavy customs duty on it.
In 1846, after years of argument and partial success, the followers of Adam Smith finally persuaded the British Parliament to remove all duties on goods imported from abroad.
Britain embarked on complete free trade, giving a further push to the rising standard of life.
Free trade enabled Britain to become the workplace of the world.