It is surveyed that the diversity of languages over the world has been being diminished. Some people suppose this trend is not worth considering and somehow may benefit the globalization. In my viewpoint, I would concur that with fewer speeches on the globe, everybody can live more happily due to some reasons.
On one side, the disappearance of some languages that are not widely spoken would yield some benefits to migrators. Language barriers are the most difficulty for people wanting to migrate to other places. One may not be accepted in daily activities by the local community or acquire full living rights because of these barriers. For example, they might not be able to make transactions with local people or their suggestions to the local projects, if not proposed in the native tongue, could be overridden by the council. Therefore, if the world used a comprehensive and unique tongue, such consequences would not appear.
On other side, without lingual diversities, human civilizations would develop more balanced over the globe. Every country has its own culture which contains living experiences gained from living conditions and knowledge or achievements which are acquired through a long historical development. These valuable sources, if could be written down to documents in a universal language, would be progagated widely and thoroughly over the world. As a result, people could mutually learn from each other and make their own country prosper like others.
To conclude, the death of many unpopularly used languages in the world, in my opinion, could not only enhance the possiblity of equilibrium of prosperity between nations thanks to easily exchanging culture and knowledge but also erase impediments to migration.