The Oder River begins in this region, and Katowice and Wroclaw are its largest cities.
The Battle of Annaberg was the largest engagement of this region's namesake uprisings, and this region's economy was based on coal mining in its Rybnik area. This region was the site of the 1241 Battle of Liegnitz in which its ruler Henry II the Pious was killed by Mongols. The peace agreement which ended the War of the Bavarian Succession was signed in this region's city of Teschen. The cities of Ostrava and Troppau are the largest in the small portion of this region which lies in one country, and its city of Opole served as the capital of its Upper section. The Oder River begins in this region, and Katowice and Wroclaw are its largest cities. This region borders Moravia and Saxony, and it was captured by Prussia in the War of the Austrian Succession. For 10 points, name this Polish region on the border of the Czech Republic and Germany.
The Battle of Annaberg was the largest engagement of this region's namesake uprisings, and this region's economy was based on coal mining in its Rybnik area.
{Silesia} [or {Slask}; or {Slezsko}; or {Schlesien}; or {Slunsk}]