structural:summarization
Decline (1000–1200)

After their successes in 983 the Wends came under increasing pressure from Germans, Danes and Poles. The Poles invaded Pomerania several times. The Danes often raided the Baltic shores (and, in turn, the Wends often raided the raiders). The Holy Roman Empire and its margraves tried to restore their marches.

In 1068/69 a German expedition took and destroyed Rethra, one of the major pagan Wend temples. The Wendish religious centre shifted to Arkona thereafter. In 1124 and 1128, the Pomeranians and some Lutici were baptised. In 1147, the Wend crusade took place in what is today north-eastern Germany.

This did not, however, affect the Wendish people in today's Saxony, where a relatively stable co-existence of German and Slavic inhabitants as well as close dynastic and diplomatic cooperation of Wendish and German nobility had been achieved. (See: Wiprecht of Groitzsch).

In 1168, during the Northern Crusades, Denmark mounted a crusade led by Bishop Absalon and King Valdemar the Great against the Wends of Rugia in order to convert them to Christianity. The crusaders captured and destroyed Arkona, the Wendish temple-fortress, and tore down the statue of the Wendish god Svantevit. With the capitulation of the Rugian Wends, the last independent pagan Wends were defeated by the surrounding Christian feudal powers.

From the 12th to the 14th centuries, Germanic settlers moved into the Wendish lands in large numbers, transforming the area's culture from a Slavic to a Germanic one. Local dukes and monasteries invited settlers to repopulate farmlands devastated in the wars, as well as to cultivate new farmlands from the expansive woodlands and heavy soils, with the use of iron-based agricultural tools that had developed in Western Europe. Concurrently, a large number of new towns were created under German town law with the introduction of legally enforced markets, contracts and property rights. These developments over two centuries were collectively known as the Ostsiedlung (German eastward expansion). A minority of Germanic settlers moved beyond the Wendish territory into Hungary, Bohemia and Poland, where they were generally welcomed for their skills in farming and craftsmanship.

The Polabian language was spoken in the central area of Lower Saxony and in Brandenburg until around the 17th or 18th century. The German population assimilated most of the Wends, meaning that they disappeared as an ethnic minority - except for the Sorbs. Yet many place names and some family names in eastern Germany still show Wendish origins today. Also, the Dukes of Mecklenburg, of Rügen and of Pomerania had Wendish ancestors.

Between 1540 and 1973, the kings of Sweden were officially called kings of the Swedes, the Goths and the Wends (in Latin translation: kings of Suiones, Goths and Vandals) (Swedish: Svears, Götes och Wendes Konung). After the Danish monarch Queen Margrethe II chose not to use these titles in 1972 the current Swedish monarch, Carl XVI Gustaf also chose only to use the title King of Sweden" (Sveriges Konung), thereby changing an age-old tradition.

From the Middle Ages the kings of Denmark and of Denmark–Norway used the titles King of the Wends (from 1362) and Goths (from the 12th century). The use of both titles was discontinued in 1973.