So, at some point between about ten thousand years ago and about seven thousand years ago, there seems to have been a gradual shift in which some people in relatively abundant regions such as river valleys began first cultivating food plants near their camps of villages, and then in several regions began altering the plants to make them more productive.
This is interesting to me because it shows how people slowly changed from just gathering plants to actually growing and improving them, which was the beginning of farming and a big step in human history.