United States of the Ionian Islands took Lefkada in 1810. The island of Corfu remained occupied by the French until 1814. The Congress of Vienna agreed to place the Ionian Islands under the exclusive "amical protection" of the United Kingdom. Despite British military administration, the Austrian Empire was guaranteed commercial status equal to the UK. The arrangement was formalised with the ratification of the "Maitland constitution" on 26 August 1817, which created a federation of the seven islands, with Lieutenant-General Sir Thomas Maitland its first "Lord High Commissioner of the Ionian Islands". The Party of Radicals (Greek: Κόμμα των Ριζοσπαστών) founded in 1848 was against the
Venetian rule in the Ionian Islands the Ionian Islands. Because of its status, Italian was also taught at schools along with Greek and English (Ionian Islands were a protectorate of the United Kingdom from 1815 until 1864). In the First Year of the secondary education, for instance, Greek was taught four times a week, Italian three times and English twice. In the Greek Census of 1907, 4,675 people from the Ionian Islands stated Catholicism as their denomination, about 1.8% of the total population (254,494), while 2,541 (1%) Ionians stated Italian as their mother tongue, making it the second language by number of speakers. The Italian language