Postal Letter

How does the Postal System work?

Hello, How does the postal service deliver mail from CA - VA in just 3 days? How do they sort it. How do they get it to the right zip code? Please tell me how USPS delivers mail from one place to a other. Please tell me the whole entire thing thanks!

Public Comments

1. When I have a week with nothing to do...I'll explain it to you.
2. No Ancient chinesse secret.
3. There is an airplane in there somewhere.