In what way can American voters bring about changes in their
government?

#1: Voting. The right to vote was not passed for all for when people want change to hang around whining.
#2: Protesting. Unlike many countries, America is the one where you can peacefully protest whenever.
#3: Petition. If you want to show that people really don't like something and the people can't vote on it, the a petition is a great way to show that something needs to change.

Hope this helps!

City because the country has land and not that many things that can get damaged.

You don’t have to names or other options up here so idk dude