Checks and balances is the answer to this question.
The Vietcong were rebels in South Vietnam who wanted to "<span>unify the South and North under a Communist government". They were great rivals of both the US and the South Vietnamese governments. </span>
The American constitution currently has a preamble, seven articles and twenty-seven amendments.
Aritgos present the country's legal guidelines, showing the rules that must be followed throughout the national territory and in all legislative, executive and judicial spheres and by federal, state and local governments.
Amendments, on the other hand, represent changes in these rules, that is, changes in the constitution, which occur when there is a need to edit a law.
