lalalalalalalalalalalalalala. ok my class at school wants to know why the government does not use abbrevations? Well thx :)
Not entirely sure if this is the reason you're looking for but:
http://myhome.sunyocc.edu/~saizl/apstyle.html provides: "Do not abbreviate association, assistant, attorney, building, district, government, president, detective, professor or superintendent". It is assumed that these are not abbreviated so writers follow proper formatting.
Other Good Sources are:
http://vpcomm.umich.edu/forum/styleguide/abbreviations.php provides that one must "abbreviate the United States only when used as an adjective. Spell it out whenever it is used as a noun". and "Use abbreviations and acronyms sparingly unless your readership is familiar with them."
http://www.nwrc.usgs.gov/techrpt/sta16.pdf gives more information and
http://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008-11.pdf provides that "United States must be spelled out when appearing in a sentence containing the name of another country. The abbreviation U.S. will be used when preceding the word Government or the name of a Government organization, except in formal writing (treaties, Executive orders, proclamations, etc.); congressional bills; legal citations and courtwork; and covers and title pages."
http://www.valpo.edu/brand/assets/docs/valpostyleguide.pdf provides, in reference to abbreviation,
"Names not commonly familiar to the public should not be reduced to acronyms solely to save a few words" and "Do not use abbreviations or acronyms that the reader would not quickly recognize."