Santa Anna's plan to attack and slaughter
Yes they did because they wanted African Americans to return to the land of their ancestors
b) progressives pressured the government to change
"They sought regulation of monopolies (trustbusting) and corporations through antitrust laws, which were seen as a way to promote equal competition for the advantage of legitimate competitors. They also advocated for new government roles and regulations, and new agencies to carry out those roles, such as the FDA."
im not sure try googlng it