What is Saxe-Altenburg?
{{Infobox Former Country |native_name = ''Herzogtum Sachsen-Altenburg'' |conventional_long_name = Duchy of Saxe-Altenburg |common_name = Saxe-Altenburg | |continent = Europe |region = Central Europe |country = Germany |status = Vassal |empire = Holy Roman Empire |government_type = Principality | |status_text = [[States of the Holy Roman Empire|State]] of the [[Holy Roman Empire]],<br />[[States of the German Confederation|State]] of the [[German Confederation]],<br />[[States of the North German Confederation|State]] of the [[North German Confederation]],<br />[[States of the German Empire|State]] of the [[German Empire]],<br />[[States of the Weimar Republic|State]] of the [[Weimar Republic]] | |year_start = 1602 |year_end = 1918 |life_span = 1602 – 1672<br />1672 – 1825*<br />1826 – 1918<br />1918 – 1920† | |event_start = [[Saxe-Weimar]] partitioned |date_start = July 7, 1602 |event1 = [[Personal union]] with<br />&nbsp;&nbsp;&nbsp;&nbsp;[[Saxe-Gotha]] |date_event1 = &nbsp;<br />1672 – 1825 |event2 = [[Ernestine duchies]]<br />&nbsp;&nbsp;&nbsp;&nbsp;rearranged, duchy restored |date_event2 = &nbsp;<br />November 12, 1826 |event_end = German Revolution |date_end = November 1918 |event_post = Merger of [[Thuringia]]‡ |date_post = 1920 | |p1 = Saxe-Weimar |image_p1 = [[File:Sin escudo.svg|20px|Image missing]] |s1 = Thuringia |flag_s1 = Flag of Thuringia (state).svg | |image_flag =Flagge_Herzogtum_Sachsen-Coburg-Gotha_(1826-1911).svg |image_coat = Wappen Deutsches Reich - Herzogtum Sachsen-Altenburg (Mittleres).jpg | |image_map = Saxe-Altenburg in the German Reich (1871).svg |image_map_caption = Saxe-Altenburg within the [[German Empire]] <br />&nbsp;<br /> [[File:Ernestine-map.png|250px]]<br />[[Ernestine duchies]] after 1825, showing Saxe-Altenburg in orange | |capital = Altenburg | |national_motto = |national_anthem = ''Heil unserm Herzog, heil''<br />(Hail to our Duke, hail!) |common_languages = |religion = |currency = | |leader1 = [[Christian II, Elector of Saxony]] ([[regent]] for John Philip) |leader2 = [[Jo