The London Protocol of January 17, 1839
1839 · London, United Kingdom
The London Protocol is signed, strengthening the recognition of Greece as an independent nation.
April 24, 1824
Austria, Britain, France, Prussia, and Russia agreed to recognize the independence of Greece.
London, United Kingdom | Concert of Europe
On April 24, 1824, the major European powers of Austria, Britain, France, Prussia, and Russia formally acknowledged the plight of the Greek struggle for independence from Ottoman rule, but the formal recognition and independence of Greece actually involved lengthy diplomatic negotiations rather than a single accord on a specific date. The Greek War of Independence, which began in 1821, had inspired widespread support across Europe, where many saw Greece as the cradle of Western civilization and were sympathetic to its quest for self-determination.
While the date in question is mistakenly stated as a specific agreement date for Greek independence, formal events leading to Greek autonomy unfolded at a later stage:
The recognition of Greek independence marked a significant shift in the political landscape of Europe. It was one of the first times the great powers intervened collectively to support a nationalist movement against imperial control. The Greek War of Independence also set a precedent for subsequent nationalist movements in Europe and the Balkans throughout the 19th century.
Source: www.britannica.com