The best answer out of the ones you’ve listed is D but it’s not the best and most accurate answer to the question
Before the demands of free trade, it was "the British" who held a monopoly on Chinese trade, since they had developed trade routes with each other over the course of hundreds of years.
Robert E. Lee was not in favor of slavery, or of dividing the nation, but his home state of Virginia was one of the Southern states that voted to secede. Because of his loyalty to his home state and in an effort to protect his own property, he left the Union Army and joined the Confederate Army.
Buying the Louisiana Purchase for $15 million