The people in the largest part of Europe just speak to you in their own mother tongue. Especially in rural areas.
If you are in cities it’s totally different and in the Netherlands many cities base language is English, not Dutch.
When going to high school, having to learn Dutch, English, German, French, ancient Latin and Greek you really think what a wast of brain space is enforced upon you.
If everyone across the globe would focus on learning English life would become significantly easier for all. As that is the main programming and business language you would assume that the focus would be on learning and improving everyone’s English in the next decades. It would propel global cooperation further which is much needed.
Also the global adoption of metric standard would help a lot. The mess I’ve encountered in engineering with connecting water pipes of all kinds of “standards” from Japan, China, Europe etc in Indonesia is simply insane.
Luckily we see a move towards metric standards in general.
Similar with electric power grid standards and plug socket uniformation.
There’s simply so much loss in not agreeing on a uniform money, language / communication standard. Luckily we all agreed on TCP/IP 😂