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 began in Britain for a number of different reasons. See Image One. Britain had access to a number of natural resources, such as iron and coal. The agricultural sector of the British economy had been steadily growing during the 18th century.ee Image Two. Britain was home to large deposits of iron and coal. These two minerals were the key to the Industrial Revolution. Since iron and coal did not have to be imported, the British economy did not suffer any shortages and the Industrial Revolution gained momentum.