If there was only one common language
The advantages: All of the people in this world would be able to communicate effectively since we all can use the same words and are able to also understand these words. There won't be any confusion nor misinterpretation as we can always clarify our questions, and justify our answers by using the same language. International voyagers, or foreigners visiting a country (tourists) can effectively communicate with each other, with no difficulty at all. It'll unite people from around the world. Equal opportunities are given for people, boosting their confidence in speaking out more often and being more open minded. The disadvantages: Some terms or phrases may not be seen in this language, that are existent in any other language. Therefore, it'll be difficult to communicate certain ideas. There wouldn't be any diversity or uniqueness to an individual if there's only one language. That is, a country's specific attribute (its language) will be lost and t...