People could use coal to power factories.
The correct answer is The Wealth of Nations.
This novel was written by Adam Smith, a famous economist and philosopher. In it, he described what a nation's wealth is, and how to achieve it, which makes it instrumental for the Free Enterprise system as we know it today. Before this book, it was much different.
The Austrians and the Prussians were attacking along the french border and they were counterrevolutionary rebellions breaking out inside France