<Tr> <Td> Indo - Bangladesh enclaves, adverse possessions and undemarcated land boundaries </Td> <Td> India Bangladesh </Td> <Td> 1947 </Td> <Td> 2015 </Td> <Td> Following Partition of Bengal (1947), the issues of adverse possessions, enclaves and unmarked boundary arose . Inside the main part of Bangladesh, there were 111 Indian enclaves (17,160.63 acres), while inside the main part of India, there were 51 Bangladeshi enclaves (7,110.02 acres). In 1974 Bangladesh approved a proposed treaty, Land Boundary Agreement, to exchange all enclaves within each other's territories, but India did not ratify it . Another agreement was agreed upon in 2011 to exchange enclaves and adverse possessions . With respect to adverse possessions, India received 2,777.038 acres of land and transferred 2,267.682 acres to Bangladesh . India ratified the agreement by constitutional amendment in May 2015 . </Td> </Tr> <Tr> <Td> South Talpatti / New Moore / Purbasha Island </Td> <Td> India Bangladesh </Td> <Td> c. 1975 </Td> <Td> </Td> <Td> This former dispute over a small island never more than two meters above sea level was contested from the island's appearance in the 1970s to its disappearance, likely due to climate change, in the first decade of the 2000s . Though land disputes no longer exist, the maritime boundary was not settled until 2014 . </Td> </Tr> <Tr> <Td> Sakhalin Island </Td> <Td> Russian Empire Empire of Japan </Td> <Td> 1845 </Td> <Td> 1875 </Td> <Td> Japan unilaterally proclaimed sovereignty over the whole island in 1845, but its claims were ignored by the Russian Empire . The 1855 Treaty of Shimoda acknowledged that both Russia and Japan had joint rights of occupation to Sakhalin, without setting a definite territorial demarcation . As the island became settled in the 1860s and 1870s, this ambiguity led to increasing friction between settlers . Attempts by the Tokugawa shogunate to purchase the entire island from the Russian Empire failed, and the new Meiji government was unable to negotiate a partition of the island into separate territories . <P> In 1875 by the Treaty of Saint Petersburg, Japan agreed to give up its claims on Sakhalin in exchange for undisputed ownership of the Kuril Islands . In 1905 under the Treaty of Portsmouth Japan gained Sakhalin to the 60th parallel, but lost it again in 1945 . </P> </Td> </Tr> <P> In 1875 by the Treaty of Saint Petersburg, Japan agreed to give up its claims on Sakhalin in exchange for undisputed ownership of the Kuril Islands . In 1905 under the Treaty of Portsmouth Japan gained Sakhalin to the 60th parallel, but lost it again in 1945 . </P>

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