<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th> Part of a series on the </Th> </Tr> <Tr> <Th> History of the Ottoman Empire </Th> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Rise (1299--1453) (show) <Ul> <Li> Gaza Thesis </Li> <Li> Interregnum (1402--1413) </Li> <Li> Fall of Constantinople </Li> </Ul> </Td> </Tr> <Tr> <Td> Classical Age (1453--1566) (show) <Ul> <Li> Sultanate of Women </Li> </Ul> </Td> </Tr> <Tr> <Td> Transformation (1566--1703) (show) <Ul> <Li> Köprülü Era (1656--1703) </Li> </Ul> </Td> </Tr> <Tr> <Td> Old Regime (1703--1789) (show) <Ul> <Li> Tulip Era (1718--1730) </Li> </Ul> </Td> </Tr> <Tr> <Td> Decline and modernization (1789--1908) (show) <Ul> <Li> Nizam - i Djedid </Li> <Li> Tanzimat Era (1839--1876) </Li> <Li> 1st Constitutional Era (1876--1878) </Li> </Ul> </Td> </Tr> <Tr> <Td> Defeat and dissolution (1908--1922) (show) <Ul> <Li> 2nd Constitutional Era (1908--1920) </Li> <Li> World War I (1914--1918) </Li> <Li> Partitioning </Li> </Ul> </Td> </Tr> <Tr> <Td> Historiography </Td> </Tr> <Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th> Part of a series on the </Th> </Tr>

When did the decline of the ottoman empire began