The massive literature on hunter-gatherer intensification usually considers population increase, environmental productivity, or technological innovation as its major drivers, though researchers disagree on which initiates the process. The examination of the Late Holocene Uinta phase of the southern Wyoming Basin documents the intensification process and the relationship of technological innovation, population increase, and environmental change. The introduction and complete adoption of the bow and arrow from 1800 to 1500 cal BP coincides with the sharp increase of radiocarbon dates and population growth, as well as climatic change from Neoglacial cooling to warmer and wetter conditions. Of these factors, the introduction of a significant new technology appears to have been the initial force in the process. The intensification process resulted in the Late Holocene population reducing their foraging efficiency to include low return-rate seeds of weedy species leading to the possible privatization of some resources and the transformation of their adaptive strategy to a delayed-return system that incorporated storage, reduction of residential mobility, and a longer-term occupation of certain locations.