Final answer:
The least common primary subsistence strategy across different sites is industrialism/post-industrialism. Industrialism and post-industrialism are modes of subsistence that dominate the global capitalist market and involve advanced technologies and mass production methods. These strategies are less common compared to other subsistence strategies.
Step-by-step explanation:
The least common primary subsistence strategy across different sites is industrialism/post-industrialism.
Industrialism and post-industrialism are modes of subsistence that dominate the global capitalist market. They involve the use of advanced technologies, machinery, and mass production methods to generate goods and services. These strategies are less common across sites compared to other subsistence strategies like gathering-hunting, pastoralism, and plant cultivation.
Industrialism and post-industrialism threaten other modes of subsistence as they seek to control land and natural resources, often resulting in people abandoning their traditional ways of making a living.