Editing Frankfurt (Oder) (section)

===Modern era===
[[File:Braun Frankfurt an der Oder UBHD.jpg|thumb|left|Frankfurt in the 16th century]]
In the 16th century, many Polish exports, including grain, wood, ash, tar and hemp, were floated from western Poland via Frankfurt to the port of Szczecin, with the high Brandenburgian customs duties on Polish goods lowered in the early 17th century.<ref>{{cite book|last=Rutkowski|first=Jan|title=Zarys gospodarczych dziejów Polski w czasach przedrozbiorowych|year=1923|language=pl|location=Poznań|pages=200–201}}</ref>

In April 1631, during the [[Thirty Years' War]], Frankfurt was the site of the [[Battle of Frankfurt an der Oder]] between the [[Swedish Empire]] and the [[Holy Roman Empire]].<ref name=Broeckling57/> After a two-day siege, Swedish forces, supported by [[Scotland|Scottish]] auxiliaries,<ref name=Mackillop64>Mackillop (2003), p.64</ref> stormed the town and destroyed many buildings, e.g. the [[Georgen Hospital Frankfurt (Oder)|Georgen Hospital]].<ref name=Broeckling57>Bröckling (1998), p.57</ref> The result was a Swedish victory.<ref name=Broeckling57/><ref name=Mackillop64/> By the end of the Thirty Years' War, the town's population had decreased from 12,000 inhabitants to 2,366 inhabitants.<ref>[[Christopher Clark]]: ''Preußen'', p. 58</ref>

[[File:Dankaerts-Historis-9291.tif|thumb|[[Battle of Frankfurt an der Oder]]]]
In the 16th century the oldest church of the town (today's ''Friedenskirche'') was secularized and was even used as a [[granary]], and from the 17th century it served as the church of the [[French people|French]] [[Huguenots]].<ref>{{cite web|url=https://www.seenland-oderspree.de/Media/Attraktionen/Friedenskirche-Frankfurt-Oder|title=Friedenskirche Frankfurt (Oder)|website=Seenland Oder-Spree|access-date=12 July 2020|language=de}}</ref>

The city was briefly occupied by the [[Russian Imperial Army]] during the [[Seven Years' War]], in August 1759, in the prelude to the [[battle of Kunersdorf]].<ref>Anisimov, Evgeniǐ Viktorovich (1995) ''Empress Elizabeth: Her Reign and Her Russia, 1741–1761'' Academic International Press, p. 132. {{ISBN|0875691404}}</ref>

With the dissolution of the [[Margraviate of Brandenburg]] during the [[Napoleonic Wars]], Frankfurt became part of the [[Province of Brandenburg]] in 1815. In the 19th century, Frankfurt played an important role in trade. Centrally positioned in the [[Kingdom of Prussia]] between Berlin and [[Poznań|Posen (Poznań)]], on the river Oder with its heavy traffic, the town housed the second-largest annual trade fair (''Messe'') of the [[German Reich]], surpassed only by that in [[Leipzig Trade Fair|Leipzig]]. One of the main escape routes for insurgents of the unsuccessful Polish [[November Uprising]] from partitioned Poland to the [[Great Emigration]] led through the city.<ref>{{cite magazine|last=Umiński|first=Janusz|year=1998|title=Losy internowanych na Pomorzu żołnierzy powstania listopadowego|magazine=Jantarowe Szlaki|volume=4 |language=pl|issue=250|page=16}}</ref> In 1842, the Berlin–Frankfurt (Oder) railway was opened.<ref>{{cite web|url=http://www.epilog.de/Berlin/Eisenbahn/Frankfurter_Bahn/Chronik_Frankfurter_Bahn_Chronik040.htm|title=Chronology of the Berlin-Frankfurter (O) Railway|publisher=EPILOGmedia|language=de|access-date=18 November 2014|url-status=dead|archive-url=https://web.archive.org/web/20141201230729/http://www.epilog.de/Berlin/Eisenbahn/Frankfurter_Bahn/Chronik_Frankfurter_Bahn_Chronik040.htm|archive-date=1 December 2014}}</ref>