English is part of the Germanic branch of the Indo-European family of languages. By year 1000, the English language consisted of approximately 40 000 words. Nowadays, the number has grown to more than 500 000. If we calculate the average of words created per century, this comes to 46 000. A great number of words found in the English vocabulary was borrowed from Latin, French, Low German, and the Scandinavian languages. We also know that some periods were more fertile than others: invasions, contact with other cultures, inventions, technological progress, music, fashion are some of the factors which have helped to enrich the language.
British colonialism in the 19th century and American capitalism and technological progress in the 20th century were undoubtedly the main causes for the spread of English throughout the world.
The USA has played a leading role in most domains for the last hundred years. At the end of the 19th century and first quarter of the 20th, it welcomed millions of European immigrants who had fled their countries ravaged by war, poverty or famine. This labor force strengthened American industries and development. The Hollywood film industry also attracted many foreign artists in quest of fame and fortune and the number of American films produced every year soon flooded the market.