What ideas did the declaration of independence set forth as the basis for the new country?

The Declaration of Independence established key principles that formed the foundation of the United States, emphasizing individual rights, such as life, liberty, and the pursuit of happiness. It articulated the idea that governments derive their power from the consent of the governed and that people have the right to alter or abolish a government that becomes destructive to these ends. Additionally, it asserted the notion of equality, declaring that all men are created equal. These ideas underscored the country's commitment to democracy and human rights.