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>
"It brought in more capital" is the best answer as to the effect that increased trade had upon many countries. Before this, however, many explorers were sent to find gold.