Origins of Two Mysterious Names

Question

While these are names of two quite different places, they both have one thing in common: they are both names that could of could not be Spanish. My first question: is Argentina a Spanish or Italian Name? My second question: is Casablanca, the name of a city in Northern Morocco, a Spanish name or an Arabic name?

Answer 1

Cuando leí nombres misteriosos, esperaba algo más oscuro y tenebroso, jeje.

Follow the links from Wikipedia

Argentina viene del latín Argentum. El Río de la Plata era la principal ruta de acceso a las minas de plata en Potosí, Bolivia.

Name of Argentina

Casablanca, porque marinos portugueses tenían como referencia una casa blanca (a casa branca) en la cima de una colina llamada Anfa.

Casablanca

Espero te sirva, suerte.