Historically it has always been to get rid of the disagreement itself. This would be by imprisonment, torture, and mass murder. It could also be trickier, such as controlling the media, education system, and political arena and simply claim that there is no opposition, which I am sure people have noticed of late regarding science and economics.
Answer:
B. Institution of Slavery
Explanation:
The positive experiments of immigrants.
They were of course enraged by the ruling and several political figures and journals vehemently denounced it. However, the most terrifying aspect was, in their view, that this decision was the first in a series of many that would eventually spread slavery to the entirety of the United States, including Free States. Senator Abraham Lincoln even explicitly stated his grave concerns in his House Divided speech of 1858.
