I think the most divers biomes would be found in the rainforest regions of the world. The rainforest regions allow for such a great amount of life to be supported by the precipitation and tropical warmth. The culture in this region would be impacted by the amount of vegetation available to be harvested not only for food, but also for shelters and other tools. The amount of precipitation and humidity would also dictate how people live and dress as well as even interact with each other and nature.