The art an artist does can be effected by what country they are from or in at the time; the culture, landscape and geography.
For example if you compare early century Spanish art with African art from the same time period there is an obvious difference in the style and subject.
The same goes for more modern art, although thanks to technology we are able to share ideas and techniques immediately, the culture and geography of a place can still have a major impact. 


 http://creativeroots.org features all sorts of recent art done by people all around the world. You can search for a particular country or nation, find art and design books on the 'Bookshelf' page or listen to podcasts.