In the South East, they bring you sweetened (usually far too sweetened for my tastes) iced tea. This is amazingly universal.
I live in NC and have been probing the border for years.
For “nicer” restaurants, the universal sweet tea boundary seems to be precisely at the NC/VA border.
Expecting everyone to know the US states is just us getting revenge on Europe for demanding we keep track of which products are named after geographic regions and which are just recipes immigrants from those places brought to America.
If you’re not in Europe, sorry you got caught up in our couple’s spat.