Where do hills come from in the world?

Hills are formed through various geological processes, primarily involving the movement of tectonic plates, erosion, and sediment deposition. Tectonic forces can uplift land, creating hills and mountains, while erosion from wind and water can shape these formations over time. Additionally, volcanic activity can create hills through the accumulation of lava and ash. Ultimately, the combination of these processes leads to the diverse landscapes we see today.