The Territory of the Saar Basin (, Saarterritorium; ) was usually called the Saar or the . It was a territory governed by the League of Nations under the Treaty of Versailles for 15 years from 1920.

Its population in 1933 was 812,000, and its capital was Saarbrücken.

It was made up of parts of the Prussian Rhine Province and the Bavarian Palatinate of the Rhine. It was slightly smaller than the modern German state of Saarland.

Commission of Government
According to Treaty of Versailles the highly industrialized Saarland was to be governed by the League of Nations for a period of 15 years, and its coalfields given to France. The Commission of Government, which represented the League of Nations, had five members. At least one member had to be French and one a native of the Saar.

At the end of the 15 year period, in 1935, the people of the Saar voted on how they wanted their country. They voted to become a part of Nazi Germany.

It had a currency, the Saar franc, and its own postage stamps during this period.

Chairmen of the Commission
The League of Nations' control to the region was represented by the following Chairmen of the Commission of Government:
 Victor Rault, France (26 February 1920 - 18 March 1926)
 George Washington Stephens, Canada (18 March 1926 - 8 June 1927)
 Sir Ernest Colville Collins Wilton, United Kingdom (8 June 1927 - 1 April 1932)
 Sir Geoffrey George Knox, United Kingdom (1 April 1932 - 1 March 1935)

Plebiscite
In 1933, many anti-Nazi Germans fled to the Saar, as it was the only part of Germany left outside the Third Reich's control.  As a result, anti-Nazi groups wanted the Saarland to remain under control of League of Nations as long as Adolf Hitler ruled Germany.  However, France had a lot of power in the Saar, including control of the coal mines.  Not many Saarlanders liked France, and in the plebiscite on 13 January 1935, 90% of the voters wished to join Germany, and 8.86% wanted to stay with the League of Nations.  Only 0.40% (that is, four voters in every thousand) wanted to join France.

Nazi rule

On 17 January 1935, the territory's re-union with Germany was approved by the League Council. On 1 March, the Nazi Germany took over the region, and appointed Josef Bürckel as Reichskommissar für die Rückgliederung des Saarlandes, "Reich Commissioner for the re-union of Saarland".

Many former politicians and office holders of the Saargebiet were changed or arrested by the Nazis.

When re-incorporation was completed, the governor became Reichskommissar für das Saarland, "Reich Commissioner of Saarland" on 17 June 1936.

Related pages
 Saarland The modern Land of Germany
 Saar (protectorate), a protectorate under French control (1947-1956)
 Sarre (département), a département of France (1798-1814)
 Saar River
 Nazi Germany
 Free City of Danzig

Notes

Other websites 
 Saarland in the page about Germany on WorldStatesmen.org
 Part III - Political Clauses for Europe, Treaty of Versaille 

States and territories established in the 20th century
1920 establishments in Europe
1920s establishments in Germany
League of Nations mandates
Saarland
States and territories disestablished in the 20th century
1930s disestablishments in Germany
1935 disestablishments in Europe