A historical point of view
There are many lengthy, fascinating and insightful studies on the history of tea, some of which I will blog about. But for a brief version here, I start with the legend of the Chinese Emperor Shen Nung.
Emperor Shen Nung was a renowned herbalist and scholar, who in 2737 BCE was sitting beneath a Camellia Sinensis tree, while his servant boiled drinking water. Some leaves from the tree blew into the water, Emperor Shen Nung decided to try it, and the first cup of tea was created.
Whether this story is true or not, it is universally agreed that tea originated in China.