Off the top of my head:
India:
Sugar
Pepper
Basil
Mangoes
Bananas
Ginger
(Ceylon) Cinnamon
SEA:
(Cassia) Cinnamon
Mace
Nutmeg
Oranges
Lemons
Limes
Central Asia:
Apples
Carrots (Afghanistan, could be considered MENA or India but the MENA category is too OP)
East Asia:
Peaches
Soy Sauce
Ketchup
Soy sauce
Sesame oil
Africa:
Coffee
Coca-Cola
Palm oil
Americas:
Chocolate
Vanilla
Blueberries
Potatoes
Tomatoes
Corn
Pineapple
Strawberries
I'm a food scholar by training (and I'm working to be a full-time food scholar, too) and you have largely summarized a bunch of conversations I've been in and books written on the whole "food is born out of migration, exchange, and local culture and biodiversity"
Very cool!
I'll take that as a huge compliment, thank you. Is there any cool facts you feel like sharing, or corrections you'd like to make? I'd love to learn more. Do you have any books that you'd recommend a layperson?