Wales would be the most likely country to hear a Celtic language being spoken.
The most commonly spoken language in the UK is English.
Spanish is the second most common "spoken" language. The second most common language is sign language.
Based on population, Chinese Mandarin is the most commonly spoken language in the world. Spanish is 2nd, followed by English and Bengali.
Russian is the most commonly spoken Language in Europe.
Portugeze is the most commonly spoken language in Brazil.
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There is no language called Celtic. Ireland's native language is Irish, sometimes called Gaelic. It is the second most important language, as English is the main language spoken in Ireland.
Hebrew is the most commonly spoken language in Israel.
Spanish is the most commonly spoken language in Central America, due to the region's history of Spanish colonization. It is the official language in all countries in Central America, with the exception of Belize where English is the official language.
English.
Russian