I would think it would be D.
A is incorrect as slavery was just made illegal.
B is incorrect as the United States could not allowed African Americans to not abide by laws.
C is incorrect as it encourage the slaves to assault the slave owners
I'm pretty sure the answer you are looking for is A) Conservatives blasted government corruption, such as payoffs
Your answer is <span>A. Many manufacturing jobs have moved to less developed nations.
Hope this helps :)
If you need more help with anymore questions then feel free to ask me :D</span>