To rule a duchy, one must typically hold the title of duke or duchess, which is often inherited or granted by a higher authority, such as a king or queen. A ruler should possess leadership skills, political acumen, and the ability to manage the duchy's affairs effectively, including its economy and relations with other territories. Additionally, a strong understanding of local customs and the ability to garner the loyalty of subjects are essential for maintaining stability and authority.
The Duchy of Brabant was formed in 1183 as a state of the Roman Empire. It was divided between Belgium and the Netherlands with Antwerp and Brussels as its main cities. In 1830 there was a revolt against the Dutch rule. This resulted in the Duchy of Brabant gaining Belgian Independence.
The Grand Duchy of Moscow.
A duchy
Duchy of Żagań was created in 1274.
Duchy of Bytom ended in 1498.
Duchy of Friedland was created in 1627.
Duchy of Burgundy was created in 843.
Duchy of Burgundy ended in 1477.
Duchy of Carinthia was created in 976.
Duchy of Carinthia ended in 1919.
Duchy of Carniola ended in 1918.
Duchy of Carniola was created in 1364.