Which of these statements best describes a common pattern of change in several latin american countries during the 19th century? a. colonists fought for and gained independence from their colonial rulers and within a century abolished slavery. b. colonists voted to end slavery and as a result brought greater prosperity to their colonies in the following years. c. colonists convinced their colonial rulers to allow slaves to earn citizenship, which eventually phased out slavery altogether. d. colonists struggled for independence from their colonial rulers but lost and went on to suffer even greater oppression.