Lippe (river) in the context of "Lippe (district)"

The Ruhr (/ˈrʊər/ ROOR; German: Ruhrgebiet [ˈʁuːɐ̯ɡəˌbiːt] , also Ruhrpott German pronunciation: [ˈʁuːɐ̯pɔt] ), also referred to as the Ruhr Area, sometimes Ruhr District, Ruhr Region, or Ruhr Valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 1,160/km and a population of over 5 million (2017), it is the largest urban area in Germany and the third of the European Union. It consists of several large cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 10 million people, which is the third largest in Western Europe, behind only London and Paris.

The Ruhr cities are, from west to east: Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Witten, Hagen, Dortmund, Hamm and the districts of Wesel, Recklinghausen, Unna and Ennepe-Ruhr-Kreis. The most populous cities are Dortmund (with a population of approximately 612,065), Essen (about 583,000) and Duisburg (about 497,000).

The Sicambri or Sugambri were a Germanic people who lived in the area between the Rhine, Lippe, and Wupper rivers, in what is now Germany, near the border with the Netherlands. They were first reported by Julius Caesar, who encountered them in 55 BC. They became a significant opponent of Roman imperial power in the Rhine region. After a major defeat by the Romans in 8 BC many of the Sicambri were moved into Roman territory.

Caesar categorized them as a Germanic people (Germani), although he did not necessarily define ethnicity in terms of language. Whether or not the Sicambri spoke a Germanic or Celtic language, or something else, is not certain. They lived in a contact zone where these two language families came into contact and were both influential.

Dorsten (German pronunciation: [ˈdɔʁstn̩] ; Westphalian: Dössen) is a town in the district of Recklinghausen in North Rhine-Westphalia, Germany and has a population of about 75,000.

Dorsten is situated on the western rim of Westphalia bordering the Rhineland. Its historical old town lies on the south bank of the river Lippe and the Wesel–Datteln Canal and was granted city rights in 1251. During the twentieth century, the town was enlarged in its north by the villages of the former Herrlichkeit Lembeck. While Dorsten's northern districts are thus shaped by the rural Münsterland with its many historical castles, just south of the town the Ruhr region begins, Germany's largest urban agglomeration with more than seven million inhabitants.

Operation Plunder was a military operation to cross the Rhine on the night of 23 March 1945, launched by the 21st Army Group under Field Marshal Bernard Montgomery. The crossing of the river was at Rees, Wesel, and south of the river Lippe by the British Second Army under Lieutenant General Miles Dempsey, and the United States Ninth Army under Lieutenant General William H. Simpson.

The Battle of the Rhine was crucial for the Allied advance into Germany, and was planned by Montgomery as a three-army assault, including an airborne assault, a five-thousand-gun artillery barrage, and Anglo-American bombers. Thousands of tons of supplies were brought forward including huge amounts of bridging equipment.