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.
1800-- after the Industrial Revolution improved roads and railroads, British passed laws forbidding the and telegraphs, this helped trade. sale of Indain made goods any where in the world even in India. Only buy British Port cities completely built by goods. Bombay and Calcutta all Indians lost their manufactoring jobs, and