(A) 1921
(B) 1922
(C) ** 1923
(D) 1924
EXPLANATIONS BELOW
Concept note-1: -In August 1923 Italians forming part of an international boundary delegation were murdered on Greek soil, leading Benito Mussolini to order a naval bombardment of Corfu. After the Greeks appealed to the League of Nations, the Italians were ordered to evacuate but Greece was forced to pay Italy an indemnity.
Concept note-2: -The Corfu Incident was seen as a serious failure for the League. It showed that powerful nations could still bully a less powerful neighbor (Greece was a small, weak country with no powerful friends on the Council).
Concept note-3: -Freedom and annexation to Greece The treaty of High power States, stipulated to London in 1863, decreed that England renounce to the Ionian islands and in May 1864 the island of Corfu became finally part of Greece.
Concept note-4: -Corfu (/kɔːrˈf(j)uː/ kor-FEW, -FOO, US also /ˈkɔːrf(j)uː/ KOR-few, -foo) or Kerkyra (Greek: , romanized: Kérkyra, pronounced [ˈcercira] ( listen)) is a Greek island in the Ionian Sea, of the Ionian Islands, and, including its small satellite islands, forms the margin of the northwestern frontier of Greece.