Because for most of modern history, we were very isolated from the “outside world”.
Other than the last 200 years, the best “internet” was a dude on a horse. Since groups of humans developed quite independently of each other, they developed their own languages. However in the modern age this is changing rapidly, with many languages and dialects coalescing into one, consistent, language. Additionally many countries have tons of English speakers which is a defacto “universal language”. Most big cities will have english translation for many signs and important documents.
Because for most of modern history, we were very isolated from the “outside world”.
Other than the last 200 years, the best “internet” was a dude on a horse. Since groups of humans developed quite independently of each other, they developed their own languages. However in the modern age this is changing rapidly, with many languages and dialects coalescing into one, consistent, language. Additionally many countries have tons of English speakers which is a defacto “universal language”. Most big cities will have english translation for many signs and important documents.