Why the United States shouldn't have become an imperialist nation?

Imperialism impacted societies in countless negative ways. It led to slave trade which then led to social discrimination around the world. It also damaged the cultures and created disunity among the natives. Last but not least, imperialism stripped countries off their natural resources and left nothing for the natives.

Explanation:

Wrote sensational reports on a variety of serious problems facing the US. Their works were widely published, and widely read, and they motivated people to make reforms.