What is the origin of the term 'thongs' in Australia, meaning

What is a Thong?

Since Australians call sandals 'thongs,' what do they call the American version of a thong? - Quora

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The Best Thongs in Australia

What is the origin of the word 'thong' and what does it mean when used as an adjective? - Quora

125 Australian Slang Words, Terms, Phrases (with Meanings) - Parade

Dongs (Thongs) for Dogs by Dingolingo, Download free STL model

Hoo-roo' and lots of other Aussie phrases that baffle the rest of the world - Starts at 60

Since Australians call sandals 'thongs,' what do they call the American version of a thong? - Quora