I believe the answer is C-The Government began to regulate the industry which helped farmers with quality cattle to more easily sell them in the stockyards.
Here's link to the answer:
bit.ly/3fcEdSx
Cultural diffusion allows societies around the world to share technologies leading to inventions such as the printing press and computers. Cultural diffusion allows societies to blend ideas and beliefs thus making interacting with each other easy.
I'd go with A, progressvism wasnt led be a certain party; more by activists.