Complex sentence: Záhorie is an informal name for the region in western Slovakia, bordered by the Little Carpathians in the east and the Morava River in the west, which also creates the borders between Slovakia, the Czech Republic and Austria.
Split into simpler sentences: Záhorie is an informal name for the region in western Slovakia bordered by the Little Carpathians in the east and the Morava River in the west. The region also creates the borders between Slovakia, the Czech Republic and Austria.