I think the correct answer from the choices listed above is option 4. The refrigerator car is the invention which was most important in revolutionizing the meat industry. It <span>is a </span>refrigerated <span>boxcar, a piece of railroad rolling stock designed to carry perishable freight at specific temperatures.</span>
Exclusive jurisdiction is when only a single court, or a type of court, has jurisdiction over the matter in question. An easy example for this is that the United States District Courts have exclusive jurisdiction in cases of bankruptcy, or that the Supreme Court has exclusive jurisdiction on reviewing other courts' decisions.
Different opportunistic positions were available, factories and such were a major role in hiring a lot of women