They speak Greek.
Mandarin Chinese.
English since it is the first or second language for most people.
Chinease
The most common first language, or mother tongue, is Mandarin Chinese. Around a billion people speak it as a first language, most of them situated in China and Taiwan. This language also has the highest number of total speakers, that's is, including people that speak it as a second or third language. The most geographically widespread native language is probably Spanish, which is the everyday language in over 20 countries on four continents.
Greek is the present language in greece because that is where greek is originated (Most spoken.) You see, when you have a language most spoken in a country, it tends to stick with everybody who is born with families that speak that certain language.
Approximately 460 million people in the world have Spanish as their first language. It is the second most spoken language globally after Mandarin Chinese.
The language with the largest number of speakers is Mandarin. The language most widely spoken in the world is English.
Mandarin Chinese is the language with the most native speakers.
Roughly 1.2 billion people speak Chinese as their first language, making it the most spoken language in the world.
B/C the people of Athens were the first to start democracy making it the most civil place. It was the center of ancient Greece.
Most Cheyenne people today speak English if not as their first language certainly as a second language. Officially they speak their own language belonging to the algonquain language speaking people.
Only two: China and Taiwan. Mandarin is also an official language of Singapore, but most people speak Singlish as their first language.