One of the reasons why the Indian Removal Act was more expensive than the government had planned was that "<span>The Seminole people resisted and cost the government money in war costs", although there was moving costs related to this issue as well.</span>
Henry David Thoreau is best known for "Walden", a book written when he was living for 2 years in a little cottage in a deep forest, and it's about living in nautre. Thoreau also wrote "Resistance to Civil Government" which is about why people shouldn't obey an unfair law. Those two books had a great impact for many later reformers.
Critical thinking can be encouraged and developed in teaching history at the secondary level. The issue is important because students often demonstrate apathy and boredom while history is considered worthless and useless because students just memorize accepted, dry, and dead facts.
Captain John Paul Jones!
Hope this helped!