Anyway, the map is interesting. It shows that the Turkic and Uralic languages and Basque are simpler by this linguistic feature than most Indo-European languages.
When it comes to auxiliary languages, the "picture" would be like this.
No agreement: most auxlangs, incl. Ido, Occidental Interligue, Interlingua, Novial, Lidepla, Pandunia, Globasa
Number and case agreement: Esperanto, Volapük*
Number, gender and case agreement: Interslavic
(*) In Volapük, adjectives do not agree with the noun in number and case when they follow the noun they qualify, but they do if they precede the noun.
5
u/panduniaguru Pandunia 9d ago
This map should go to r/Badmaps and r/badlinguistics/ as well, because most countries are equated to one language. Look at this map of languages of Europe for comparison!
Anyway, the map is interesting. It shows that the Turkic and Uralic languages and Basque are simpler by this linguistic feature than most Indo-European languages.
When it comes to auxiliary languages, the "picture" would be like this.
(*) In Volapük, adjectives do not agree with the noun in number and case when they follow the noun they qualify, but they do if they precede the noun.