*1914 According to the Corfu Protocol [[w:Northern Epirus|Northern Epirus]] is granted autonomy within Albania; [[w:Byzantine & Christian Museum|Byzantine & Christian Museum]] is founded in Athens, becoming one of the most important museums in the world in Byzantine Art.

*1917 Hierarchy of the Greek Church changed in accordance with political control of the country.

*1918 The "St. Sophia Redemption Committee" is formed in Britain after the [[w:Armistice Day|Armistice]], whose members included two future Foreign Secretaries and many prominent public figures, seeking to restore [[Hagia Sophia (Constantinople)|Hagia Sophia]] into an Orthodox Church (1918-1922);<ref>Prof. Erik Goldstein. ''Holy Wisdom and British Foreign Policy, 1918-1922: The St. Sophia Redemption Agitation''. In '''Byzantine and Modern Greek Studies''' Vol.15 (1991): pp.36-64.</ref> Roman Catholic opposition to the St Sophia Redemption Committee included Msgr. Manuel Bidwell (Chancellor of the Archdiocese of Westminster) who was on the initial committee, British MP Sir [[w:Stuart Coats|Stuart Coats]] also on the committee, Cardinal [[w:Pietro Gasparri|Pietro Gasparri]] the Papal Secretary of State, and the Vatican who wished to block St. Sophia becoming a Greek Orthodox Church (according to the [[w:Grand Vizier|Grand Vizier]] of Constantinople who had an offer of Papal support).<ref>Prof. Erik Goldstein. ''Holy Wisdom and British Foreign Policy, 1918-1922: The St. Sophia Redemption Agitation''. In '''Byzantine and Modern Greek Studies''' Vol.15 (1991): pp.46,47,59.</ref><ref group="note">

[[w:Stuart Coats|Coats]] pointed out that in 1453 Constantinople had officially been in communion with Rome as a [[Eastern Catholic Churches|Uniate]] church. As such, he argued, St. Sophia should continue as a Greek Rite Uniate Church. Cardinal [[w:Pietro Gasparri|Gaspari]] gave an interview to the French press while in Paris to observe the peace negotiations, explaining that from Rome's viewpoint the great church had been catholic longer than anything else, being only in schismatic hands from the time of [[Michael I Cerularius of Constantinople|Michael Cerularius]] to the [[Council of Florence]]. The Grand Vizier of Constantinople indicated to the British that he had an offer of Papal support, as the Vatican wished to block St. Sophia becoming a Greek Orthodox Church. The Rev. J.A. Douglas, a member of the Redemption Committee reported that:<br>

:" 'The traditional diplomacy of the Vatican has certainly laboured for decades under the influence of what would happen if the Oecumenical Patriarch, a dangerous witness against Roman claims, even when half-buried in the slum of the Phanar and paralysed by Turkish tyranny, should emerge and be the symbol of a great and progressive Communion which functioned with glorious St. Sophia as its mother church.' "<br>

(Prof. Erik Goldstein. ''Holy Wisdom and British Foreign Policy, 1918-1922: The St. Sophia Redemption Agitation''. In '''Byzantine and Modern Greek Studies''' Vol.15 (1991): p.48.)</ref>

*1918-1923 Allied [[w:Occupation of Constantinople|Occupation of Constantinople]].

*1918-24 Emigration of 70,000 Greeks to the United States.

*1919-22 [[w:Greco-Turkish War (1919-1922)|Greco-Turkish War]]; a million refugees flee to Greece joining half a million Greeks who had fled earlier; [[w:Greek Genocide|Greek Genocide]] eliminates the Christian population of Trebizond and Anatolia.

*1920 Death of [[Nektarios of Pentapolis]] (Aegina); St. Nektarios lived on Aegina for 13 years, and was buried in the precinct of the church that he founded; [[w:Chrysanthos Filippides|Chryssanthos, Bp. of Trebizond]] is condemned to death in absentio by a Court Martial in Ankara; Dodecanese Islands ceded to Greece by Italy; publication of Encyclical Letters by Constantinople on Christian unity and on the Ecumenical Movement; [[w:Treaty of Sèvres|Treaty of Sèvres]] cedes Eastern Thrace and Ionia (Zone of Smyrna) to Greece, but is superceded in 1923 by the Treaty of Lausanne by which these areas were again lost.

*1921 [[Greek Orthodox Archdiocese of America|Greek Orthodox Archdiocese of North and South America]] formally formed; martyrdom of Bp. [[Euthymios (Agritellis) of Zela]], the last Bishop of the Diocese of Zela on the Pontus.