via an American knitting forum I just got asked this question.
I thought everyone knew what bunting was and its function but I then realized it’s a very British concept.
It was used in the 1600’s by our navy the ‘Bunter’ would be responsible for making strings of smaller flags to run up when the ship needed to send a message to another ship of the line. We know all flags in in the navy have a different meaning.
It was then used as a way of decorating outside functions such as National Events and went from there.
I’m surprised to be asked the question as most countries now use bunting of some kind/design.