9.)How did Henry David Thoreau inspire later American reformers?

A. By introducing civil disobedience
B. By introducing a new genre of writing
C. By convincing the people to believe in God
D. By introducing the benefits of solitary living

A. By introducing civil disobedience ?

I agree.

Yes, that is correct. Henry David Thoreau inspired later American reformers primarily through his concept of civil disobedience. Thoreau believed that individuals should not blindly obey unjust laws and had the moral obligation to resist them. He put this idea into practice by refusing to pay a poll tax and spending a night in jail. Thoreau's essay "Civil Disobedience" had a significant impact on later activists and reformers, including figures like Mahatma Gandhi and Martin Luther King Jr. who used his ideas as a foundation for their own movements of nonviolent resistance.