Answer:
the voters, which is us, selects the electors
For the first one The institution of slavery contradicted the foundation of the American society because till this day people of color are still being treated horrendously due to their ancestors and their teachings to the newer generation. Also it contradicted it because Americans had their amendments but it didn’t apply to slaves .
Capitalism is my best guess, considering it is one of the few forms of economy that allows mostly free production. Free enterprise could also be the answer.