Uruguay is formally proclaimed independent at preliminary peace talks brokered by the United Kingdom between Brazil and Argentina during the Cisplatine War.
Greek War of Independence: The French Morea expedition to recapture Morea (now the Peloponnese) ends when the last Ottoman forces depart the peninsula.
Greek War of Independence: The London Protocol entails the creation of an autonomous Greek state under Ottoman suzerainty, encompassing the Morea and the Cyclades.