Question: what are the different languages best for?
Answer: Spanish. Ziplining over the rainforests in Costa Rica, oohing and awing at Machu Picchu, and sunbathing on the sun-kissed coasts of Spain — that could be you while learning Spanish! ... 
French. ... 
3. Japanese. ... 
Italian. ... 
Mandarin. ... 
Portuguese. ... 
Arabic. ... 
Korean.