Plurilingualism has proved to have many advantages:
Bilingual people have a greater attention span, bilingual and multilingual minds are more effective, flexible, and creative.
Economic studies show that the value of speaking a second language is about that of $ 128,000 USD.
Plurilingual minds show greater understanding, therefore, they are more tolerant to foreign cultures.
If you want to study or work in another country, you need another language.
If you want to do business with foreign companies, you will surely need another language.