Where are iBooks built

Where were your iBooks build?
Chine, Taiwan, US, Mexico?

tiawan and not trying to offend,but why do want to know

I'm not trying to offend anybody either, but I have found that for some electronic devices you can tell the quality level you can expect by knowing where were built
I don't know if it is tha same for laptops or mac's

isnt it usually that parts of most electronic devices are made around the world and then assembled in a country? read an article maybe two years ago about this, i dont think the country of assembly has anything much to do with the finished product, more like the individual components.