Ancient Greek Philosopher Plato had once said that 'Necessity is the Mother of Invention'; means difficult/different problems and situations require whole new thoughts and ideas to counter it. These new ideas help in the invention or innovation, creation or development of machines, devices and computers, above all factories (where are these can be made or manufactured). These are used for the production of certain goods & services, and also for the accomplishment of certain scientific objectives. Earlier when it is thought that the resources present in the world are limited. To survive, these resources needs to be snatched from the others. This was the period when the idea of Mercantilism prevail in the world. Because of this thought most of the European Nations expanded themselves all over the world (esp. Great Britain). But in the  eighteenth century AD when industrial revolution began in United Kingdom, then the idea of  Mercantilism  faded. They started to th...