There are other places outside of EUROPE?! PREPOSTEROUS!

hahahhahhahahahahhahahahahahahah

Spanish,Portuguese and Mandarin. I'd say close to like half the world's population speaks one of these three languages. 90% of people in China are Han Chinese so out of 1.5 billion ppl you can basically talk to 1.35 billion of them and they'll most likely understand you(unless they're Shanghainese). Spanish and Portuguese cover basically all of Latin America, Spain, Mexico, Portugal and the Philippines, so you're good.

[Incredible™]

Chinese for commercial purpose ,btw Chinese food is delicious.

I'd say English.

I'd say chinese as china is major market of a lot of products and many countries are importing stuff from china so it would be great if u r familier with chinese

chinese language is the most difficult lang. to learn!! over 10000 alphabets !!

[Spartacus]

Martian-ese.

Or be anal probed.

French

chinese language is the most difficult lang. to learn!! over 10000 alphabets !!

Indeed, Chinese is one of the most difficult language to learn, but it could be very useful a couple decades later, if China controls the market