Lorraine in the context of "Battle of Dunkirk"

The French Third Republic (French: Troisième République, sometimes written as La III République) was the system of government adopted in France from 4 September 1870, when the Second French Empire collapsed during the Franco-Prussian War, until 10 July 1940, after the Fall of France during World War II led to the formation of the Vichy government. The French Third Republic was a parliamentary republic.

The early days of the French Third Republic were dominated by political disruption caused by the Franco-Prussian War of 1870–1871, which the Third Republic continued to wage after the fall of Emperor Napoleon III in 1870. Social upheaval and the Paris Commune preceded the final defeat. The German Empire, proclaimed by the invaders in Palace of Versailles, annexed the French regions of Alsace (keeping the Territoire de Belfort) and Lorraine (the northeastern part, i.e. present-day department of Moselle). The early governments of the French Third Republic considered re-establishing the monarchy, but disagreement as to the nature of that monarchy and the rightful occupant of the throne could not be resolved. Consequently, the Third Republic, originally envisioned as a provisional government, instead became the permanent form of government of France.

The Electoral Palatinate was a constituent state of the Holy Roman Empire until it was annexed by the Electorate of Baden in 1803. From the end of the 13th century, its ruler was one of the Prince-electors who elected the Holy Roman Emperor, ranking them among the most significant secular Princes of the Holy Roman Empire.

The Palatinate consisted of a number of widely dispersed territories, ranging from the left bank of the Upper Rhine in the modern state of Rhineland-Palatinate, adjacent parts of the French regions of Alsace and Lorraine to the opposite territory on the east bank of the Rhine in present-day Hesse and Baden-Württemberg up to the Odenwald range and the southern Kraichgau region, containing the capital cities of Heidelberg and Mannheim.

The Greater Region (German: Großregion [ˈɡʁoːsʁeˌɡioːn]; French: Grande Région [ɡʁɑ̃d ʁeʒjɔ̃]; Luxembourgish: Groussregioun), formerly also known as SaarLorLux, is a euroregion of eleven regional authorities located in four European states. The term has also been applied to cooperations of several of these authorities or of their subdivisions, administrations, organisations, clubs and people. Member regions represent different political structures: Wallonia, comprising the French and German-speaking Communities of Belgium; the former Lorraine part of the French Grand Est region, including the departments Meurthe-et-Moselle, Meuse, Moselle and Vosges; the German federated states of Rhineland-Palatinate and Saarland; and the sovereign state of Luxembourg.

Alsace is a cultural region and a territorial collectivity in the Grand Est administrative region of northeastern France, on the west bank of the upper Rhine, next to Germany and Switzerland. In January 2021, it had a population of 1,919,745. Alsatian culture is characterized by a blend of German and French influences.

Until 1871, Alsace included the area now known as the Territoire de Belfort, which formed its southernmost part. From 1982 to 2016, Alsace was the smallest administrative région in metropolitan France, consisting of the Bas-Rhin and Haut-Rhin departments. Territorial reform passed by the French Parliament in 2014 resulted in the merger of the Alsace administrative region with Champagne-Ardenne and Lorraine to form Grand Est. On 1 January 2021, the departments of Bas-Rhin and Haut-Rhin merged into the new European Collectivity of Alsace but remained part of the region Grand Est.

Moselle (French pronunciation: [mɔzɛl] ) is the most populous department in Lorraine, in the northeast of France, and is named after the river Moselle, a tributary of the Rhine, which flows through the western part of the department. It had a population of 1,046,543 in 2019. Inhabitants of the department are known as Mosellans.

Nancy is the prefecture of the northeastern French department of Meurthe-et-Moselle, located in the Grand Est region (in the historical region of Lorraine). The city is situated on the left bank of the Meurthe. The metropolitan area of Nancy had a population of 508,793 inhabitants as of 2021, making it the 16th-largest functional urban area in France and Lorraine's largest. The population of the city of Nancy proper is 104,387 (2022).

The origins of the city date back to the 11th century, when a fortified town was established by Gerard, Duke of Lorraine. Nancy developed into the ducal seat of the Duchy of Lorraine, a position it held until the duchy was annexed by France under King Louis XV in 1766 and replaced by a province, with Nancy maintained as capital. The city’s Old Town (Vieille Ville), centered around the Ducal Palace of Nancy, reflects this long history, while the 18th-century Ville-Neuve bears witness to a period of ambitious urban planning under Stanislaus I of Poland. His patronage produced some of the city’s most notable monuments, including the Place Stanislas, a large square built between 1752 and 1756 by architect Emmanuel Héré, today inscribed on the UNESCO World Heritage List.

Alsace–Lorraine (German: Elsaß–Lothringen), officially the Imperial Territory of Alsace–Lorraine (German: Reichsland Elsaß–Lothringen), was a territory of the German Empire which is now part of France. It was established in 1871 by the German Empire after it had occupied the region during the Franco-Prussian War. The region was officially ceded to the German Empire in the Treaty of Frankfurt. French resentment about the loss of the territory was one of the contributing factors to World War I. Alsace–Lorraine was annexed in practice by France at the war's end following Germany's defeat in 1918, but only formally ceded back in 1920 as part of the Treaty of Versailles.

Geographically, Alsace–Lorraine encompassed most of Alsace and the Moselle department of Lorraine; the Alsatian part lay in the Rhine Valley on the west bank of the Rhine River, east of the Vosges Mountains, while the section initially in Lorraine was in the upper Moselle valley to the north of the Vosges. Politically, it was the only subdivision of the German Empire considered an "Imperial Territory"; as such, it was under the direct administration of the Imperial German state, rather than a quasi-sovereign constituent of the federal Empire. It was granted a legislature and limited internal autonomy in 1911.