Pl why did sugar plantations produce such high profits? a. sugar cane was easy and cheap to grow. b. the colonial governors placed a high tax on sugar. c. europe had a high demand for sugar, molasses, and rum. d. spanish plantation owners sold tons of sugar to english colonists. what was the main purpose of spanish missions? a. to grow sugar cane and other valuable crops b. to guard the property of colonists c. to house the growing number of colonists from spain d. to convert, educate, and european natives