They invented carrying things on your head, I think.   http://www.smh.com.au/ffximage/2005/...b__430x304.jpg  They build some pretty sweet architecture.   http://www.neystadt.org/john/album/T...an-Village.jpg   http://www.warfactory.co.uk/gallery/...utfinished.jpg   http://atschool.eduweb.co.uk/sprites...0Granaries.jpg   http://images.encarta.msn.com/xrefme...2/T642884A.jpg  They invented the very stylish lip plate.   http://ieet.org/images/ethiopiantp.jpg  They really improved the scenery in Detroit, Michigan.   http://www.juancole.com/graphics/detroitghett2.jpg   http://www.danhagerman.com/images/Bronx%20Ghetto.jpg   http://www.urbanhonking.com/actionit...oit_houses.jpg   http://farm1.static.flickr.com/149/3...73f25e.jpg?v=0