Use this map to answer the following question: This is a map of the world titled Trade Routes from the 16th to 19th Centuries. The title is missing a word before the word trade. There are lines emanating from West Africa going north through the Sahara to Europe, lines going from the coast across the Atlantic to North and South America, and lines going from the western coast of Africa over the ocean to Europe.

Which of the following would accurately complete the title of this map?