Editing Deventer (section)

=== 16th–18th centuries ===
[[File:Deventer 1550.jpg|thumb|Deventer in circa 1550]]
[[File:Blaeu 1652 - Deventer.jpg|thumb|1652 map of Deventer by [[Willem Blaeu|Willem]] and [[Joan Blaeu]]]]
[[File:Kungsboken-karta-deventer.jpg|thumb|Map of Deventer at the conquest 1672]]
Between 1500 and 1800, the volume of water flowing through the IJssel decreased, decreasing the importance of Deventer's harbour. The competition with trade centres in [[Holland]], as well as the [[Dutch War of Independence|religious war]] between 1568 and 1648, brought a decline in the city's economy.

In the 18th century, the [[iron]] industry came to Deventer. East of the town, so-called "oer", river sand containing iron, was found as early as 900. From this material, ore was produced and brought to town. The main road of the villages Okkenbroek, Lettele and Schalkhaar is still named Oerdijk (Ore Dyke).