While looking for something else, I came across an interesting food timeline. Perhaps a bit selective, but definitely worth exploring. Then by coincidence I stumbled on another timeline, this time of gardening around the world. Again, not a bad way to waste some time, although way too many links seem to be broken. Anyway, I naturally tried to go for the trifecta, but I could not find an even half-decent timeline of agricultural history. Maybe you can?