The State That Lasted Seventy Days: How Hannover Became Lower Saxony
For seventy days in 1946, Hannover was once again a German state. It had a government, six ministries, a parliament, a coat of arms, a flag, and a capital. Its territory covered a region where roughly six million people live today. Yet before the new state had time to settle into postwar life, it disappeared into a larger political project: the creation of Lower Saxony.
The episode is one of the strangest pieces of Germany’s postwar history. Hannover was created by the British occupation authorities, but the man appointed to lead it was already campaigning for its abolition. The result was not simply a change of borders. It was a struggle over regional identity, administrative efficiency, and the right of local populations to decide which state they belonged to.
From kingdom to Prussian province
Hannover’s earlier history gave the 1946 settlement an added layer of irony. From 1714 to 1837, Hannover and Great Britain shared a monarch. The Hanoverian Elector George became King of Great Britain in 1714, and the British royal family thereafter belonged to the House of Hanover.
That connection ended in a very different political age. During the German War of 1866, the Kingdom of Hannover fought against Prussia and was defeated. Prussia annexed the kingdom and converted it into the Province of Hannover. A sovereign state became an administrative unit, and Hannover remained part of Prussia for eight decades.
The British dismantle Prussia
After the Second World War, Britain controlled much of northwestern Germany. British officials regarded Prussia as a major source of German militarism and wanted its political structures removed. On 23 August 1946, Military Government Ordinance No. 46 dissolved the Prussian provinces in the British occupation zone.
The order created three new Länder: Schleswig-Holstein, North Rhine-Westphalia, and Hannover. In an unexpected historical reversal, the British occupation authorities restored statehood to the territory associated with the royal house that had once ruled both Hannover and Britain.
Hannover immediately embraced its revived identity. The state brought back the Saxon steed as its coat of arms and adopted an older flag associated with the period before the personal union with Britain. A parliament was installed, a government was formed, and after eighty years of Prussian rule, Hannover once again appeared on the map as a state.
A state created with an expiry date
The revival was short-lived because the British had already established a limit on the number of Länder they wanted in their zone. A July 1946 plan allowed for no more than five states. North Rhine-Westphalia was certain to remain. Hamburg and Bremen were expected to continue as city-states, and Schleswig-Holstein occupied another place. That left room for only one additional state in the northwestern part of the zone.
Four territories competed for that final position: Hannover, Oldenburg, Braunschweig, and the small state of Schaumburg-Lippe. Some form of merger was unavoidable. The unresolved question was which territories would combine and which would be absorbed.
Hannover’s leading advocate was Hinrich Wilhelm Kopf, a Social Democrat who had been removed from public service by the Nazi regime and appointed by the British as chief president of the Province of Hannover in 1945. Kopf was a powerful regional politician, and he had been planning a larger state before Hannover was formally restored.
On 1 April 1946, months before the new state was established, Kopf submitted a memorandum to the British military government calling for a large state of Lower Saxony. Hannover, in his vision, would not survive as a separate state but would become the core of a broader union.
That made his appointment as Hannover’s minister-president on 23 August particularly unusual. He was leading a state whose eventual dissolution he had already made one of his central political goals.
Competing visions for northern Germany
Kopf’s plan faced opposition from the leaders of Oldenburg and Braunschweig. They proposed a different arrangement: a state centered on Oldenburg, with the Hannover districts of Osnabrück and Aurich attached to it, while Braunschweig would receive the Hildesheim administrative district and the county of Gifhorn.
Under that proposal, Hannover would have been divided among its neighbors. The competing plans therefore represented more than an administrative debate. They reflected older state identities and rival ideas about whether the postwar map should follow historic borders, economic links, or the preferences of the occupation authorities.
The decision came on 20 September 1946 before the Zonal Advisory Council in Hamburg. Kopf’s proposal won by sixteen votes to six, achieving the required two-thirds majority. On 23 October, the deputy British military governor, Brian Robertson, approved the arrangement.
Effective 1 November 1946, Hannover, Braunschweig, Oldenburg, and Schaumburg-Lippe were united to form Lower Saxony. The state of Hannover had lasted only seventy days.
What Hannover gained—and what others lost
The merger did not erase Hannover’s influence. Hannover became the capital of Lower Saxony, and Kopf became the new state’s first minister-president. He remained in office until his death in December 1961. The Saxon steed also survived as the coat of arms of Lower Saxony, meaning that one of Hannover’s freshly restored symbols became the emblem of the larger state that replaced it.
For Oldenburg and Braunschweig, however, the settlement marked a profound loss of status. Both had existed as independent states for centuries, but they were reduced to administrative districts. Schaumburg-Lippe, which had been a principality with its own seat and vote in the German federal system until 1918, became a single county.
Kopf did not get every part of his preferred map. Bremen remained independent, and Lippe chose to join Westphalia rather than Lower Saxony. Still, the central objective was achieved: a large northern state replaced several smaller historic territories.
The referendum that changed nothing
Discontent did not disappear with the merger. Article 29 of the Basic Law created a mechanism for reviewing the internal organization of the federal territory. In 1956, referendums were initiated in Oldenburg and Schaumburg-Lippe after the required petitions cleared the legal threshold.
In Oldenburg, approximately 46,000 people signed—nearly 13 percent of all eligible voters. The process then moved slowly. Almost two decades passed before the federal authorities allowed the populations to vote.
On 19 January 1975, the results were striking. More than 81 percent of participants in Oldenburg voted for the creation of an independent state. The votes in favor amounted to about 31 percent of all eligible voters, comfortably exceeding the required 25 percent threshold. Schaumburg-Lippe also met the legal requirement.
By the rules then in force, both referendums succeeded. The voters had formally expressed a desire to leave Lower Saxony. Yet the federal legislature chose not to implement the result. Later in 1975, the Bundestag and Bundesrat decided that Oldenburg and Schaumburg-Lippe should remain within Lower Saxony, arguing that the creation of two very small Länder would conflict with the goal of a more coherent territorial structure.
An Oldenburg citizens’ committee challenged the decision in Karlsruhe. On 1 August 1978, the Federal Constitutional Court rejected the complaint. In the meantime, Article 29 had been amended in 1976. What had functioned as a binding obligation to reorganize the federal territory became largely discretionary.
A vanished state with a lasting legacy
The brief existence of Hannover in 1946 shows how quickly borders can be created and removed when occupation authorities, political leaders, and administrative priorities converge. It also demonstrates that historical identity does not automatically determine political geography. Hannover returned as a state, adopted its old symbols, and then became the foundation of a larger state almost immediately.
The later votes in Oldenburg and Schaumburg-Lippe reveal the other side of the story. Even when citizens cleared the legal hurdles and decisively supported a new arrangement, institutional priorities could still prevail. The map of modern Germany was shaped not only by popular will, but also by decisions about governability, size, and political stability.
Lower Saxony therefore carries two histories at once: the history of a newly assembled postwar state and the memory of the older territories absorbed into it. Hannover may have vanished after seventy days, but its capital, its political leadership, and its heraldic symbol continued to define the state that followed.
