The group that benefited the most from gaining independence from Mexico are the Tejanos who were the former Americans and has now become the American citizens and had claimed for the American rights and privileges.
I believe it's asking you how many votes you need to get the majority. example: in a presidential election, more than 50% is the majority.
After the revolutionary war, most states, especially those in the south, developed new slave codes. after the 1830s these laws became increasingly stringent, due to the tensions produced by the Nat Turner Rebellion in southampton county, VA., and the rise of the abolitionist movement in the north. hope this helps