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, which began in England, was a period in  the late 18th and early 19th centuries when the life of ordinary  people was changed dramatically forever. It was a time of numerous  inventions, so industry developed so fast that society could barely  keep up.he Industrial Revolution occurred in the last part of the 18th  century. It began in Great Britain.   2. This revolution was an economic one, and it changed the way the  world produced goods.