What issue was the speaker looking to change in “what was the Fourth of July to a slave “

The claim that Douglass is making in his speech is to abolish slave trade or the practice of slavery in the United States.

The following passage describes an example of __negative externality in the 1980s, manufacturing power plants in the midwest burned coal with high sulfur content, which when released as smoke, mixed with moisture in the atmosphere to create an acid that blew into canada and new england. the acid fell to the earth in the form of rain, killing fish and causing deforestation and building deterioration.