States and territories disestablished in 1742

divisions of the region of Silesia

historical Piast principality

thumb|262px|Sulzbach-Rosenberg|Sulzbach Castle Palatinate-Sulzbach was the name of two separate states of the Holy Roman Empire located in modern Amberg-Sulzbach, Bavaria, Germany, ruled by a branch of the House of Wittelsbach.

Silesian duchy (1311–1675)

historic territory in Upper Silesia

Silesian duchy

european polity

thumb|Yarubids at their founding in 1625 The Yarubid dynasty (also '''Ya'ariba or Ya'arubi'''; ) were rulers of Oman between 1624 and 1742, holding the title of Imam. They expelled the Portuguese from coastal strongholds in Muscat and united the country. They improved agriculture, expanded trade and built up Oman into a major maritime power. Their forces expelled the Portuguese from East Africa and established long-lasting settlements on Zanzibar, Mombasa and other parts of the coast. The dynasty lost power during a succession struggle that started in 1712 and fell after a prolonged period of

former noble family