Probably as English avoids putting the articles in front of "abstract" nouns. I know there's a thing that in English there are words that don't have article.
What's the difference between "Heute ist der Tourismus von Bedeutung" and "Heute ist der Tourismus wichtig"?
It's similar to the difference between "of importance" and "important". The meaning is the same, but the first phrase sounds more impressive :)
Why is "Today tourism is of meaning" not valid in this case. The "today" sounds odd to me but in the corrections it also has it.
It just doesn't make sence as a full sentence., because what is the meaning? Is today the meaning or is tourism? It's just not a complete sentence. You'd say "today tourism is important" or "tourism is important today" but it is still a broken sentence, because you would need to say why it is important and for who.
I believe it can in the same way "today" can mean "the present era"/"these days" in English.
Another very important meaning of Bedeutung is "meaning." That is, Bedeutung = importance or significance [synonym Wichtigkeit], and Bedeutung = meaning or sense [synonym Sinn] These two related but different meanings are really important for German language learners, who often need to ask "Was bedeutet das?"
So I thought this meant "Today is important for tourism." I'm guessing this is a case issue? Would that use "dem Tourismus" instead of "der Tourismus?"
As a german native, not sure how to explain it but this sentence can't mean "today is important for tourism". "Heute" isn't a noun in that case but states the time. "der tourism" is the subject of this sentence, as you can ask "what is of importance today? The tourism". Or in german "WER/was ist heute von Bedeutung? DER Tourismus". I hope I could explain it at least a bit.
Oh and "Today is important for tourism" would use "den Tourismus", it's "Akkusativ Objekt"
"... of import" ought to be accepted:
https://www.oxfordlearnersdictionaries.com/definition/english/import_1?q=import (3d meaning)
Why is the translation of "Bedeutung" as "significance" marked as incorrect when it is in the list of acceptable alternatives?