stylistic:style_transfer, linguistic:voice_change, quality:corruption
Casablanca

When Sultan Mohammed ben Abdallah (c. 1710 –1790) rebuilt the city after its destruction in the earthquake of 1755, it was renamed " ad-Dār al-Bayḍāʾ " (الدار البيضاء The White House), though in vernacular use it was pronounced " Dar al-Baiḍā " (دار البيضاء literally House of the White, although in Moroccan Arabic vernacular it retains the original sense of The White House).

The origins of the name "Casablanca" are unclear, although several theories have been suggested. André Adam mentions the legend of the Sufi saint and merchant Allal al-Qairawani, who supposedly came from Tunisia and settled in Casablanca with his wife Lalla al-Baiḍāʾ (لالة البيضاء White Lady). The villagers of Mediouna would reportedly provision themselves at "Dar al-Baiḍāʾ" (دار البيضاء House of the White).

In fact, on a low hill slightly inland above the ruins of Anfa and just to the west of today's city centre, it appears there was a white-washed structure, possibly a Sufi zawiya that acted as a landmark to sailors. The Portuguese cartographer Duarte Pacheco wrote in the early 16th century that the city could easily be identified by a tower, and nautical guides from the late 19th century still mentioned a "white tower" as a point of reference. The Portuguese mariners calqued the modern Arabic name to "Casa Branca" (White House) in place of Anfa. The name "Casablanca" was then a calque of the Portuguese name when the Spanish took over trade through the Iberian Union.

During the French protectorate in Morocco, the name remained Casablanca (pronounced). Today, Moroccans still call the city Casablanca or Casa for short, or by its Arabic name, pronounced d-Dār l-Biḍā in Moroccan Arabic or ad-Dāru-l-Bayḍā' in Standard Arabic.