Few languages have been used extensively as official international communication for centuries
....... official international? I think it reads better if you take off "international"
This situation has resulted in extinction of other less frequently spoken languagesThis reason has resulted in extinction of other minority dialects.
Although some people believe that life would be simpler with one or two languages
than in the past, this tends to have more disadvantages.
Unsurprisingly, English as widely-accepted language plays an integral role
not only on not only in international business but also on as an effective communication to foreigners mode between nations.
Unsurprisingly, English as widely-accepted language plays an integral role not only on international business but also on effective communication to foreigners. Chinese, another example, is also spoken globally because of the highest Chinese population in the world. Such circumstance affects people to abandon their mother tongue in order to acquire more widespread used languages as mentioned. In addition, the internet is so easily accessible that has an influence on language popularity.
........... in this para, your reason is not clear. Is it Chinese that fades off.............. You need to elaborate on this more.