It seems that you have missed the necessary options for us to answer this question, so I had to look for it and here is the answer. The British government took control of the Suez Canal and Singapore during the 19th century for implementing a policy in order to <span>ensure safe passage on strategic waterways. Hope this helps.</span>
I believe that the cash crops and the need for those cause a lot of slave trading. Americans used a lot of slaves to help build up cash quickly.
Blockade southern ports
capture Richmond Virginia
capture cities on lower Mississippi (cant spell sorry) river
John Foxe is the author of the book, "Foxe's Book of Martyrs". It was published in 1563, and details the sufferings of Protestants by the Catholic Church.