Really the ninth amendment just gave a blanket statement covering anything we may have missed.
The line was important because it was established that any new western state that would be south of the line could be a slave state, while any new state in the west north of the line would be a slave free zone. This was done according to the Missouri compromise when slavery was an issue once more in 1850. The line also became the northern border of Texas when it was later added to the union.
The answer is B. Globalization concerns many workers because companies will tend to seek lower costs by outsourcing labor.
This is true mostly in developed countries, due to the fact that labor in these countries is paid higher than in developing countries. Therefore, large companies seek the same work positions and professional profiles in countries where they have to pay less to get the same job done. This way, the profit increases.
