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No. A staple food is one that forms the principal part of a national or regional diet. Thus rice is a staple food in parts of China. Potatoes are a staple of many northern European countries. Taro/yam is a staple of Polynesia.
Before rice as staple food, it was Sago (an edible starch from palm)
Antarctica is uninhabited; it has no staple food, at least for people. Penguins who live there eat fish.
rice and fish
Barley
rice, noodles, fish
rice
What Is The Oldest Staple Food ?
staple food of rajasthan is chapatti.
Roti is the staple food for sikisim
The staple food of Delhi is rice.
In Kerala people eat South Indian food and rice is there staple food.