Which of these inventions had the greatest impact on the meat-packing industry(a. mechanical reaper (b. refrigerator car(c. steel plow(d. wndmill

The invention of the refrigerator car made the biggest impact on the meat industry. It made a big impact because if you didn't have a freezer to transport meat to different places, the meat would go spoiled and wouldn't be used for meals, then what is the point of harvesting the meat if the meat is going to go spoiled before it gets to its destination.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem