The term mouse fly is kind of a contradiction and one of the types of flies that brings the word fly in fly fishing almost as far away from something flying as possible - still surpassed by shrimp flies not to mention crab flies, but anyway...
One of the reasons Britain became rich was because the Industrial Revolution (factories and such) got off the ground there sooner. Britain had a large navy, and many colonies in other parts of the world, such as India, and Rhodesia.
The Industrial Revolution was a period when new sources of energy, such as coal and steam, were used to power new machines designed to reduce human labor and increase production. The move to a more industrial society would forever change the face of labor. The first Industrial Revolution began in Great Britain after 1750. There were several factors that combined to make Great Britain an ideal place for industrialization. First, the Agricultural Revolution of the 18th century created a favorable climate for industrialization.