What is Marne (department)?
{{Infobox settlement | name = Marne | native_name = | native_name_lang = | type = [[Departments of France|Department]] | image_skyline = Préfecture de la Marne (51).jpg | image_alt = Prefecture of the Marne department | image_caption = [[Prefectures in France|Prefecture]] building of the Marne department, in Châlons-en-Champagne | image_flag = Drapeau fr département Marne.svg | flag_size=125px | flag_alt = | image_shield = Blason département fr Marne.svg | shield_size=80px | shield_alt = | nickname = | motto = | image_map = Marne-Position.svg | map_alt = | map_caption = Location of Marne in France | pushpin_map = | pushpin_label_position = | pushpin_map_alt = | pushpin_map_caption = | coordinates = {{coord|49|00|N|04|15|E|region:FR_type:adm2nd_scale:2000000|display=inline,title}} | subdivision_type = Country | subdivision_name = [[France]] | subdivision_type1 = [[Regions of France|Region]] | subdivision_name1 = [[Grand Est]] | established_title = Département | established_date = 4 March 1790 | founder = | seat_type = [[Prefectures in France|Prefecture]] | seat = [[Châlons-en-Champagne]] | parts_type = [[Prefectures in France|Subprefectures]] | parts_style = para<!-- list, coll (collapsed list), para (paragraph format) --> | p1 = [[Épernay]] | p2 = [[Reims]] | p3 = [[Vitry-le-François]] | government_footnotes = <ref>{{cite web |url=http://www.marne.fr/le-departement/le-conseil-general/assemblee/president-du-conseil-general-de-la-marne |title=Président du Conseil départemental |publisher=La Marne rn ligne |format= |language=French |accessdate=3 December 2016 |date= |archive-date=21 June 2015 |archive-url=https://web.archive.org/web/20150621004442/http://www.marne.fr/le-departement/le-conseil-general/assemblee/president-du-conseil-general-de-la-marne |url-status=dead }}</ref> | leader_party = | leader_title