Answer:
C. European involvement helped expand the slave trade within Africa.
Explanation:
The correct answers are "Economic", "Indigo", and "Customer".
Since its establishment during the 18th century, the British East India Company saw India as a sourcing point for numerous goods that were later taken to Great Britain, including Indigo, which is used for coloring clothing.
On the other hand, the vast population of India made the territory a potential market for goods manufactured by the British. This also made many businessmen very wealthy during the years of British Colonization of India.
It was the CSS Virginia that was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack, although it turned out to not be terribly useful in wartime.