The main focus of this BA Thesis paper is to explain the issue of English language being cited as a global one in today's society, due to the fact that it is one of the most spoken and widespread world languages which is accepted and used in many countries, not only as an official, but also as a second language. Furthermore, this paper focuses on the fact that English occurs as a language which is most frequently being used as lingua franca, or to be more precise as a language of communication that can be used between people whose mother tongues differ. This paper provides historical perspective from which we can obtain many reasons why and how did English become a dominant language which spread on the other countries and continents. From a historical point of view, it can be concluded that the strong political and economic power of English-speaking countries enabled it to obtain an important position in the society and become a global language. Also, this paper focuses on Global Englishes that are actually varieties of English which differ in vocabulary, grammar and pronunciation from the standard one. The introduction offers general statements and basic characteristics of the main topic. In the main body part, reader is firstly presented with the explanations why there is a need for a global language and lingua franca, which are shortly after explained from the historical point of view. The emphasize is also on colonisation and globalisation that influenced the creation of various English-based pidgins and creoles. Lastly, this paper contains summary which briefly describes the most relevant parts of this paper.