The correct answer for this question is "b. a city opens a new elementary school to serve a large immigrant population living on its outskirts." The action that is most similar to city-planning techniques developed by the aztecs is that <span>a city opens a new elementary school to serve a large immigrant population living on its outskirts. </span>
Henry David Thoreau is the answer
Harriet Tubman because she was strong and lead slaves to freedom.