Don't serve sweet tea In Georgia? If you don't you might go to jail

[CutiePie2000]

I, too, am wondering what Sweet Tea is?

1) I know what tea is (hot water + tea bag)
2) I know what cold tea is (the above, but it has lost its heat)
3) And I when I hear the term, "iced tea", I think of Snapple, Nestea, etc.

So what is Sweet Tea?
Do they make 1), add sugar while it's still hot [so that the sugar dissolves] and then cool it down and drink it?

Please help me, a mere Canadian, out of my ignorance.