3. most of the decline of the native american population in the 16th century was due to a. slavery b. disease c. fires d. war 4. the triangular trade system included a. europe, africa, and asia. b. north america, europe, and africa. c. asia, africa, and australia d. africa, asia, and north america. 8. which of the following is considered a "mid-atlantic"/"middle" colony in north america? a. new york b. georgia c. rhode island d. new hampshire