Land Hadeln

The Peasants' Republic of Land Hadeln was a de facto Peasants' Republic in the northern most region of Lower Saxony. It was formally part of the Duchy of Saxe-Lauenburg, although the duchy didn't enforce it's control over the territory since around 1210, shortly after which, the Peasants' Republic was founded.

History
Hamburg attacked the Duchy of Saxe-Lauenburg in 1393 to conquer the Ritzebüttel castle from the knights Lappe, who had previously been the feudal lords ruling over parts of the Land Hadeln exclave of Saxe-Lauenburg. The war was won by Hamburg, which then seized the city and forced the lords to leave the territory. The rest of the exclave then fell into the de facto control of Hamburg, until the city tried to monopolize wheat exports, which lead to a peasants' revolt in 1456 that freed the republic from Hamburgian rule and reestablished the de facto Peasants' republic of Land Hadeln as fully independent.

The nation was annexed by the Kingdom of Hannover in 1763 while Hannover ruled over Saxe-Lauenburg through a personal union.