How do letters get sent?

Question

if someone could give me a step by step analysis that would be great.. 10 points to best answer

Answer 1

I'm not certain what your question is, but my guess is that you need an analysis of the U.S. postal system.  If so, your best bet is to do some on line research.  Try googling U.S. Postal Service and see what you can find.  Also, try wikipedia and see what comes up.