Many of the Founding Fathers of the United States believed the Enlightenment's ideas. For example, the idea that a government's job is to benefit all of a country's people not just the people in power was very important to them. They made this idea about a government "for the people" one of the most important parts of the new United States Constitution and the new American government they created.
The Enlightenment's ideas were also important to the people who fought in the French Revolution of 1789.
In some countries, kings and queens took some of the Enlightenment's ideas and made changes to their governments. However, they still kept power for themselves. These kings and queens were called "enlightened despots." Examples include Catherine the Great of Russia, Frederick the Great of Prussia, and Gustav III of Sweden.
During the Age of Enlightenment, as more and more people began to use reason, some began to disagree with the idea that God created the world. This caused conflicts - and, later, war.

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