Section 1
The Preamble and Federalism
The Constitution begins with the Preamble, starting with the famous words, "We the People." This means the government's power comes from the citizens, not a king.
The system is built on Federalism. This is the sharing of power between the National (Federal) government and the State governments.
For example, the Federal government handles war and money, while States handle schools and local laws. This sharing prevents any single level of government from having total control.