Answer:
I would cite sources from the Newspaper articles;
1. Miami-Dade County Votes to Keep Pit Bulls Out, and
2. Ohio Overturns Pit Bull Bill
Explanation:
In referencing the newspaper article, "Miami-Dade County Votes to Keep Pit Bulls Out", I will cite the example of the vicious attack on an 8-year-old girl named Melissa whose injuries sustained from the attack required several major reconstructive surgeries. Despite the protests by some to repeal the ban, the majority continue to reject the move.
I will also cite the statement by Representative Bruce Goodwin in, "Ohio Overturns Pit Bull Bill". He said, and I quote, "The 'Pit Bull' has the distinction or characteristic that when they grab on, they don't let go." He added, " 'Pit Bulls' are the choice for drug dealers and other bad folks and that is for a reason."
Answer: it sounds like the lower animal is at lower risk of getting eaten. Which is why roosters are a higher animal then humans.
The Chinese used water routes and silk could not travel over water.
The Mongols were devastating Chinese territory at this time and the trade routes to sea were dangerous. There was still a high demand for silk, but overland took longer