The Greek War of Independence, also known as the Greek Revolution, was a successful war of independence waged by the Greek revolutionaries between 1821 and 1832, with later assistance from Russia, the United Kingdom, France, and several other European powers against the Ottoman Empire, who were assisted by their vassals, the Eyalet of Egypt, and partly by the Vilayet of Tunisia.Following the fall of the Byzantine Empire to the Ottoman Empire in 1453, most of Greece came under Ottoman rule. During this time, there were frequent revolts by Greeks attempting to gain independence. In 1814, a secret organization called the Filiki Eteria was founded with the aim of liberating Greece.
The Filiki Eteria planned to launch revolts in the Peloponnese, the Danubian Principalities, and Constantinople. The first of these revolts began on 6 March 1821 in the Danubian Principalities, but was soon put down by the Ottomans. The events in the north urged the Greeks in the Peloponnese into action and on 17 March 1821, the Maniots declared war on the Ottomans.By the end of the month, the Peloponnese was in open revolt against the Turks and by October 1821, the Greeks under Theodoros Kolokotronis had captured Tripolitsa. The Peloponnesian revolt was quickly followed by revolts in Crete, Macedonia, and Central Greece, which would soon be suppressed. Meanwhile, the makeshift Greek navy was achieving success against the Ottoman navy in the Aegean Sea and prevented Ottoman reinforcements from arriving by sea.Tensions soon developed among different Greek factions, leading to two consecutive civil wars.
Following years of negotiation, three Great Powers, Russia, the United Kingdom and France, decided to intervene in the conflict and each nation sent a navy to Greece. As a result of years of negotiation, Greece was finally recognized as an independent nation in May 1832.The Revolution is celebrated on 25 March by the modern Greek state, which is a national day.