Explanation:
Answer will be D They were developed by early historians
Answer:
because of adulteration which is the cheapening of products through the addition of impure or inferior products. This helped in determining what could or could not be added to food products through regulations that require use of official weights and measures.
One factor was barbed wire. As farmers and ranchers wisened up, they used the wire to fence in their cattle, destroying the use of cowboys, and taking away one aspect of the "wide open west".
Herds of cattle took over the plains and destroyed the grass. In 1883 t big drought struck and water streams dried up and prairie fires grazed. Also the barbed wire and the natural disasters. People wanted to be able to mark their property.
