Spain has spanish ethnic.
Argentina has italian,spanish,celt,german,various kinds of slavs,jews and muslims,and inmigrants from the rest of south america(a small amount of portugueses too).
Spain has the original dialect
Argentina has a different dialect,considered by most of us as an improvement of the spanish (because it`s easier to learn other languagues since we eliminated the SSS when we talk :lol: )
Argentina is bigger,it`s ubicated in one of the most big countries,spain is a small country.
Argentina has apart from argentinian spanish different dialects talked,specially german and french (of course the english is the 2nd official languague,the most talked before spanish).
Spain has the Original spanish,gallego,and different regional dialects
Argentina has longer streets,different tipes of buildings (spain has some older buildings,but both we have modern buildings a lot)
Spain has a different subway payment form (more expensive) than argentina.
Argentina has different history than Spain.
and btw,don`t do stupid comments in this thread i took to much time to do!.