|United States||agriculture: 1.1%|
services: 76.8% (2010 est.)
If there is one trend in economic history, it is that technology makes society more productive. What we mean by that is it gets cheaper and easier to make "stuff". The stuff we made was traditionally pretty generic and broadly usable, and fell primarily into the agriculture and industry segments of the economy, but, as you can see from the lede, our economy is very much service focused nowadays. The thing about the service industry is that it's all about activities that heavily feature interpersonal communication, and as anyone who has been in a long distance relationship (or collaboration) knows, interpersonal communication does not work too great over distance.