Analysis of information sources in references of the Wikipedia article "List of historical Greek countries and regions" in English language version.
(...) Hellenistic-era Iranian kingdom (...) But all in all, Cappadocia remained an Iranian kingdom, one which developed from an Achaemenid satrapy.
In May 1914, the Great Powers signed the Protocol of Corfu, which recognised the area as Greek.
{{cite web}}: CS1 maint: archived copy as title (link)In May 1914, the Great Powers signed the Protocol of Corfu, which recognised the area as Greek.
{{cite web}}: CS1 maint: archived copy as title (link)