During WWII an accident occurred which was to forever shape the dietary habits of the people of Tonga. HMS Devonshire, a County-class heavy cruiser of the British Royal Navy, was sailing from Florida laden with emergency rations bound for the British county of the same name. After having a particularly wild time in Miami the whole of the crew were very drunk, even by naval standards.
Because of the drink the hold of the ship was loaded solely with 20,000 large crates of the recently launched breakfast cereal Cheerios. Shortly after leaving port their party resumed, and someone decided to empty the hold into the ocean.
Over the next few weeks nearly a million catering-sized boxes of Cheerios washed up on the shore on Tonga, where it soon became a firm favourite of the islanders. And since then Cheerios have become the national dish for breakfast.