What do the dots on the page above refer to?

When president johnson vetoed a law that would extend the freedmen’s bureau, congress reacted by supporting the veto and closing the freedmen’s bureau. writing a new law to show support for the black codes. overriding the veto and expanding the agency’s powers. drafting a law to prevent african americans from voting.

What championed nationalism and denounced nullification

Which best describes the effect of europe on aboriginal peoples?