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.
India, You’ll get properly boiled tea with milk (called chai) unless you specifically ask for black/ red tea which you’ll only get in Kerala (called black/kattan ) & in our NorthEastern states (called red tea/lal cha). Tea is by default served hot unless you ask for iced tea which is just tea-coloured flavoured sugar water made with a premix.
The 2nd best way to piss off an Indian is to serve tea brewed with teabags, the best to upset us is to serve tea brewed with teabags and using powdered milk.
We like our tea to be boiled with milk, water, spices, and sugar/jaggery. If you want to make our day, boil the tea with condensed milk, water, and spices and watch us beam. The spices will always be fresh and any combo of sweet cardamom, ginger, cloves, star anise, pinch of cinnamon, lemongrass, black pepper, fennel seeds,
In Kashmiti homes/ restaurants, you’ll get the saffron flavoured Kehwa (no milk in this one, but lots of flavour) and the pink colored salt tea (noon chai) made with green tea leaves, milk, rock salt, cardamom, pistachios, almonds. and baking soda.