Their questioning of authority and the role of the government inspired the revolutionaries, and ordinary citizens, of France. ... For his part, Rousseau argued against all class divisions in society, which caused French citizens to question the absolute monarchy of Louis XVI and the unequal nature of the estates-system.
How the South should be readmitted to the Union-- splits occurred between moderate Republicans and Radical Republicans.
Moderate Republicans believed the South should be brought in quickly and allowed to take sovereignty of their states back as soon as possible. They did not want harsh punishments and wanted to quickly transition back to "normal". The Radical Republicans wanted to not only prevent Southern Democrats from regaining control too quickly, but also wanted to require loyalty pledges to reenter the Union. Radicals also wanted to ensure full citizenship and voting rights to blacks which as not a focus or even a desire of moderates.
He resigned because he'd already had enough trouble as president. Mainly the Watergate scandal. His plan was for him to step down and if he was arrested the vice president which would then be the vice president would pardon him. Also, if he didn't resign he'd likely be impeached anyway.