Language is the most common means of interaction between humans. However, while animals have developed methods of interacting with one another, only humans have achieved such a high level of proficiency in the use of language. Humans, like others, use body language, but spoken, written, and signed language are the most efficient means of communication with one another. Using it, we can communicate our ideas, wishes and more. The modern world would not exist if people could not talk to one another. My aim in writing this undergraduate thesis was to give readers some insight into the status of English as the most important, progressive, and developing languages in the world as well as an international language in many different ways. English is particularly the world's business, scientific, technological, medical and diplomatic language. Because of its ease of use and clear structure, it has emerged as the standard of the worldwide communication.