English is essential for the education field. Many countries encourage children to learn English as an additional language. Many syllabi for engineering and science are written in English, even in countries that don't have English as an official language like the Netherlands or Sweden. It is the most widely used language in science, so you will find most of the research and studies in this field. Many students at universities in different countries learn almost all of their subjects in English to make it more accessible for international students.
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