Original sentence: The British capital was given the perjorative sobriquet Londonistan in the late 1990s owing to the number of exiled Islamist groups that estabished political headquarters in the city, and from where they sought to overthrow  Middle Eastern governments they considered ‘heretical’
Edited sentence: The British capital earned the perjorative sobriquet Londonistan in the late 1990s owing to the number of exiled Islamist groups that estabished political headquarters in the city, and from where they sought to overthrow  Middle Eastern governments they considered ‘heretical’