Comments by "Helmuth Schultes" (@helmuthschultes9243) on "American Reacts to Indigenous Languages in Australia" video.
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Being totally nomadic, tribal groups totally dependant on walking, it was largely tribal languages, restricted to local area that the group travelled in. With possibly some shared language elements to neighboring groups. Australia had no large animals used for transport and riding. All being walking around areas with water and food resources detrrmining to large extent area a given group of families covered in the necessary nomadic life.
Unlike most cultures around the world with farming, trade and travel supported by animals domesticated, crops grown and riding of some animal, be it horse, donkey, oxen, deer, elephant etc. Those societies had more commonly widely used language, shared over major national and trans national, rather than almost tribal boundary. Aboriginals as for jungle tribes, the isolation of family/tribal groups leads to unique multiple laguages, with some commonalities but large differences too. Far apart groups not able to communicate except on limited basis.
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