They built stone bridges and cleared large areas for grazing animals.
Explanation:
In agriculture, grazing is a method of animal husbandry whereby domestic livestock are allowed to consume wild vegetations outdoor in order to convert grass and other forages into meat, milk, wool and other animal products, often on land unsuitable for arable farming.
Developmental psychology is characterized as a branch that aims to study the interaction of physical and psychological processes and growth stages, from conception to the end of a subject's life.
When an organization consistently uses a single variable only to modify production plans, such as, hiring/firing employees, it is likely deploying a pure strategy, since it appears to fit the definition of what you said. I hope this helps!
