The full range of instructional and reference material can be found in only five languages. They are English, French, German, Japanese and Russian. Other useful languages, such as Spanish, also require long years of study by, say, a youth in Mongolia. It is a practical impossibility for young people from ordinary families to succeed in learning one of these languages, because they lack the essentials. Years of study are required.
Money is needed for books and language teachers.
Much time is needed to master such languages because they are all filled with complications and irregularities. English, for example, is so difficult that after 6 years of study under First World school conditions Japanese students cannot speak it. For all but the power elite in the Third World, science education is made nearly impossible by this language barrier. The resulting lack of scientifically trained indigenous personnel is at least partially responsible for the absence of the infrastructure of civilization in the Third World. Even if outside forces were to design and construct water, sewage and electrical systems, the inability of local labor to operate and maintain them renders the effort futile.