Were a universal auxiliary language in operation they would all be considered as one.
His Holiness Baha'u'llah wrote about this international language more than forty years ago.

He says that as long as an international language is not adopted, complete union between the various sections of the world will be unrealized, for we observe that misunderstandings keep people from mutual association, and these misunderstandings will not be dispelled except through an international auxiliary language.
Generally speaking, the whole people of the Orient are not fully informed of events in the West, neither can the Westerners put themselves in sympathetic touch with the Easterners; their thoughts are enclosed in a casket--the international language will be the master key to open it.

Were we in possession of a universal language, the Western books could easily be translated into that language, and the Eastern peoples be informed of their contents.
In the same way the books of the East could be translated into that language for the benefit of the people in the West.

The greatest means of progress towards the union of East and West will be a common language.

It will make the whole world one home and become the strongest impulse for human advancement.