What is the oldest language in the world?

What is the oldest language in the world? This seems to be a simple and straightforward question. But it is not that simple at all. And before answering, it is necessary to know: what do you mean when you say "the oldest language"?

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Music used:
The quiet one by Taomito
After rain: Sunshine by Taomito
Unchartered by Taomito

Video used:
Khoisan click language by xurxo mariño
https://www.youtube.com/watch?v=W6WO5XabD-s

#languages #linguistics #history