What does this quotation from the introduction of the declaration of independence do?

The answer is “it explains what the rest of the document will do”

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!

i have to go with a for this one