What main principles of the government the declaration include?

The Declaration of Independence outlines several key principles of government, primarily the ideas of natural rights, popular sovereignty, and the right to revolution. It asserts that all individuals have inherent rights, such as life, liberty, and the pursuit of happiness, which governments are created to protect. Additionally, it emphasizes that governments derive their power from the consent of the governed and that people have the right to alter or abolish a government that fails to uphold these principles.