(For an enlarged version of the map above, please click here.)
Why do we need to have a good command of English, one may wonder.
Maps of the Indian (Sanskrit) World, Japanese Empire and English world
Once upon a time, Indian culture flourished in Asia, as you can see by studying their religions, folklore, mythology, and ancient literature.
Mapping the spread of the Sanskrit language across the ancient world reveals the area where people share a common peaceful culture of Buddhism and Hinduism.
The European colonization of Asia left this area in great hardship.
Imperial Japan expelled European invaders from the Indian cultural zone.
As all of us know, the Japanese are portrayed as invaders of Asia, but the truth is that Japan defended Asian from European invaders.
European people speak similar languages which are commonly classified as Indo-European languages.
Since 1945, the English language is spoken in many countries.
High income countries share many commonalities: They are predominantly White, and use an Indo-European language. Among Indo-European language countries, old India is the only country which does not enjoy economic power.
It may be safe to assume that all countries with economical and political power use English as one of their official languages, or at least, their business is carried out in English.
If English is the language of political and economic power in the world, is it wise not to put major effort into mastering this language?
(India is a Sanskrit zone which has suffered from brutal colonization. English is spoken in India, and yet it is a poor country. Here is another piece of evidence that Sanskrit is not one of Indo-European languages; and Buddhism and Hinduism are one and the same religion.)