Why Do We Use ‘Flags’ to Represent Countries and How Did This Tradition Start?

Imagine you're playing a game with your friends, and each one gets a special color or picture to show who they are. That's like how flags work for countries! Long ago, people used simple banners to tell others who they were fighting for, and eventually, those banners became the colorful flags we see today. Over time, each flag came to mean something very special about a country and its people.