Geographic determinism is the idea that the physical surroundings of a place can play a big role in how the people who live there behave and how their society develops. It's like how your home's layout might affect how you move around and interact with your family. For example, if you live in a place that has a lot of resources, like fertile land or fresh water, you might have an easier time growing crops or staying hydrated. This could lead to a stable and prosperous society. On the other hand, if you live in a place with harsh terrain or limited resources, you might have a harder time getting what you need to survive, which could lead to conflict or poverty. So, basically, geographic determinism is the idea that where you live can have a big impact on your life and how your society develops.