How you the people allows the government to rule?

The government in the US is ruled by the US Constitution. It is divided into 3 divisions (3 articles). The congress makes the laws, the executive branch enforces the laws, and the Judaical branch ensures that the laws are constitutional (or that the laws conform to the US Constitution). I recommend going onto YouTube.com and watching "Schoolhouse Rock" about the US Constitution and government- it explains it with Cartoons and it worked great for my generation.