The Irish Potato Famine was caused by an airborne fungs called Phytophthora Infestans. This fungus came from the ships traveling from North America to England and was wafted on the Irish fields (mainly along the countryside of Dublin) by a fog. This made the leaves of the potato plants turn black and curled, before being rotted. This Irish Potato Famine has caused starvation to millions of people.
Jefferson Davis did not secure popular support in the South, which illustrated the divided nature of the South's population on the war.
Using the court system is the direct strategy commonly used by interest groups which involves lawsuits, legal fees, and amicus curiae briefs. Option C is correct.
An amicus curiae brief is a written submission to a court in which an amicus curiae (literally a "friend of the court": a person or organization who/which is not party to the proceedings) can set out legal arguments and recommendations in a case.
The correct answer is Frederick Douglass.
Douglass was born a slave in Maryland and escaped. After escaping, Douglass became a leader in the abolition movement in New England and lectured around the world, writing and speaking about his experiences as a slave and the institution of slavery.