I believe the Andes Mountains ( mountain range) and the Pampas!
Istanbul is on the edge of two major regions: the Balkans (in Europe) and Anatolia (in Asia).
No, New Zealand is a separate country and is not part of Australia. They are both located in the region of Oceania, but they are two distinct nations.
There are more than two contrasting region. The top two contrasting region are the East and the West.
Mongolia is the only country in Asia entirely above the 40th north latitude. In the region of Eurasia, both Kazakhstan and Russia are the two countries above the 40th north latitude.
centromere
Chile and argentina
Wales and some communities in the Patagonia region of Argentina.
Patagonia is not a country. It is an area that is partly in Chile and partly in Argentina. So there are two currencies in use in it. The currency of Argentina is the Argentinian Peso and the currency of Chile is the Chilean Peso.
Germany and Austria
a region
France and Spain
France and Spain
India and Pakistan i believe. :)
Spain and Portual are the two main countries on the Iberian Peninsula.
culture and climate
Norway and Sweden are two separate, sovereign countries that happen to be neighbors in the region known as Scandinavia.
Delaware and Maryland.