Final answer:
Switzerland is a country with German as its majority language, followed by French, Italian, and Romansh in descending order of prevalence among the population.
Step-by-step explanation:
The country that has German as its majority language, French as the second, Italian as the third, and Romansh as the least common language is Switzerland. This nation exemplifies linguistic diversity in Europe, having four national languages corresponding to the languages spoken by its neighbors.
Each language mainly dominates in different cantons: German is the most prevalent, followed by French and Italian. Romansh, while one of the national languages, is spoken by only approximately 1% of the population. Switzerland's multilingualism reflects its cultural and geographical position at the crossroads of Germanic and Romance language areas in Europe.