evidence: Island of Šarengrad (Croatian: Šarengradska ada, Serbian: Шаренградска ада, in Croatian pronounced as /ʃǎreŋgratskaː ǎːda/ or pronounced as /-ǎda/) is a Danube river island situated close to the village of Šarengrad in Croatia.[1] It covers an area of 9km2. The old riverbed of the Danube caused problems for navigation due to its heavy bending in this area. In order to solve the problem, Austria-Hungary began digging a canal in 1892 to straighten the flow of the river. After 17 years, the Mohovo-Šarengrad canal was finally finished, and as a result the Island of Šarengrad was formed in 1909.[2] [...] In 1998, through the Erdut Agreement, Eastern Slavonia, Baranja and Western Syrmia was reintegrated with Croatia. However, the Island of Šarengrad together with Island of Vukovar has stayed under Serbian military control.