Cultures through language | The true meaning of the word Thank you

We say it everyday, though most of us don't even know what this word means.
Even thought almost every language has it's way to say it, not everybody uses it the same way.
Did you know that the ethimology of a word, which is the words from which it came from, can determine how people use it and can even influence their culture even thousands of years apart?
Let's discover together the history and secrets of the word 'thank you' in English, Italian, Chinese, French, Russian, Spanish, Japanese, Indian, German and Arabic.