Why was Wilmington, NC considered a symbol of "black hope" at the end of the 19th century?

there has only been 12 presidents. the 12th president is/was moon jae-in

for this case we have the following equation:

we apply distributive property to the terms within parentheses.

subtracting 2 on both sides of the equation:

answer: c  

the factory goes out of business, causing the workers to lose their jobs.

explanation:

the answer is c have a good day