How Do Cities Change Over Time?

Cities are like living things, they grow and change over time. Imagine a city as a tree: when it starts, it’s just a small sapling with a few houses around it. But as more people come to live there, the city grows bigger, adding new roads, buildings, and even parks. Sometimes cities get crowded and busy, like a full-grown tree with lots of leaves. Other times, they might slow down or even shrink if not enough people stay.