English, England extending their language around the world (British Empire), and becoming the United States of America in the greatest economic and military power, has become the de facto lingua franca of our day.
Despite the existence of other languages and international languages like Esperanto or Interlingua looking to use more neutral language, English is today the main language of international communication. This is because a "civilization" dominant usually does not take another language, but on the contrary, it imposes its own, this is the reason why in many European countries speak languages derived from Latin, As this is the official language of the Roman Empire.
Currently there are proposals to neutrality in the use of an auxiliary language, but from the economic point of view would be lost large amounts of money to be paid during the teaching-learning process, these are, for example, royalties pay for books and teaching materials in general, as well as the certification exams that must be renewed every so often. It follows the refusal to adopt an international language other than English by those who profit with this business.
