How did the introduction of English contribute to the decline of Manx on the Isle of Man?

The decline of the Manx language was not an instantaneous event but a process that accelerated significantly during the 19th century. While Manx remained the primary language for the majority of the population on the Isle of Man into the early 18th century, English gradually displaced it as the dominant medium of communication.12

By the 19th century, this shift became rapid. The displacement of Manx by English led to a sharp decrease in native speakers; by the 1901 census, only 4,419 speakers remained, all of whom were bilingual. Within two decades of that census, the language had ceased to function as a normal means of daily communication.2

Historical factors contributing to this transition included the island's political integration with England starting in 1346 and the lack of a strong, aristocratic-supported literary tradition that might have otherwise bolstered the language's prestige and survival against the encroaching influence of English.23