Answer: Reason
You can read about that on wikipedia: https://en.wikipedia.org/wiki/Age_of_Enlightenment
Or here on history.com: https://www.history.com/topics/british-history/enlightenment
The nineteenth European imperialism was motivated by various reasons. The most important of them had to do with the development and growth of a new stage of capitalist economy.
During the 19th century several European countries were changing due to industrial acceleration, which historians call the Second Industrial Revolution. It happened mostly in industry, transportations and communications.
For example, the invention of the dynamo in 1870 soon lead to electric ilumination of cities; the invention of the internal combustion engine allowed for the use of oil and its derivatives as power sources.
This lead to a revolution in transports, virtually reducing distances and accelerating time -- now people would travel and exchange communication much faster than before. The world got smaller and more connected which gave an impression of much more things happening than before.
All of these discoveries and new power sources lead to a greater need of raw material and of consumer markets in order to have groups whom to sell the goods being massively produced. These new necessities would be violently attended through invasion and colonization of several parts of the globe, giving birth to modern imperialism.
The Battle of the Wabash, also known as St. Clair's Defeat, named after the expedition's leader, Major General Arthur St. Clair, occurred on 4 November 1791, and was one of the first tests of the fledgling U.S. Army of the Early Republic.
Hope this helps! :)
The American Revolution was principally caused by colonial opposition to British attempts to impose greater control over the colonies and to make them repay the crown for its defense of them during the French and Indian War (1754–63)
