The concept of self-government is emphasized in which portion of the Constitution?

The Preamble of the Constitution is where the concept of self-government is prominently emphasized. It opens with the phrase "We the People," which highlights that the authority of the government derives from the consent of the governed. This fundamental idea signifies that the power of the government is rooted in the will and interest of its citizens, establishing a foundational principle of democracy.

The Preamble further outlines the purposes of the government, such as promoting the general welfare and securing the blessings of liberty. By starting with this declaration, the Preamble sets the tone for the entire Constitution, which aims to ensure a government that is accountable to the people and responsive to their needs and aspirations. This reflects the essential idea of self-governance—where the people have the ultimate authority in directing their government.