The answer to your question would be A
good luck! :)
<span>Each power plant gets a particular number of allowances, with each allowance allowing the company to emit one ton of sulfur dioxide.</span>
The silk road is important because of getting to see exotic customs which is connected through the trade routes. while they get to trade more items with other people (movement of goods) and brings cultures all around (ethno-culture)!
the answer is D encouraged slaveholder's resistance to abolitionist activists