The answer to this question is : Only kings and their relatives could become royalty, while effective military leaders and politicians could become nobles
The social instability of Saint Domingue was the leading factor in the Haitian revolution, as it caused political unrest within the colony. Economic, cultural, interactions with the environment and political causes all led up to the social disambiguation.
The answer is Confucianism. Confucius expressed reverence to the parents, elders, and ancestors as VERY important. According to him, the parent to child relationship is the most important one, for a peaceful society depends good filial piety.