The foundation of Berlin was very multicultural. The surrounding area was populated by Germanic Swabian and Burgundian tribes, as well as Slavic Wends in pre-Christian times, and the Wends have stuck around. Their modern descendants are the Sorbian Slavic-language minority who live in villages southeast of Berlin near the Spree River. In the beginning of the 13th century, two towns (Berlin and Cölln) developed on each side of the river Spree (today the Nikolaiviertel and the quarter next to it beyond the river). As the population grew, the towns merged and Berlin became a center for commerce and agriculture. This area stayed small (about 10,000 inhabitants) up to the late 17th century, because of the 30 years' war in the beginning of the 17th century, which led to death of about half of the population. Since the the late 17th century, when large numbers of French Huguenots fled religious persecution, Berlin has welcomed religious, economic and other asylum seekers. 1701 Berlin became the capital of Prussia and in 1710 Berlin and surrounding former autonomous cities were merged to a bigger Berlin. In 1871 Berlin became the capital of the new founded German Reich and a few years later, it became a city with more than one million inhabitants because of the immensely growing industry. Shortly after the first World War, in 1920, the last of the annexations of surrounding cities of Berlin led to the foundation of the Berlin as we know it now. After the coming into power of the National Socialists, Berlin became the capital of the so called Third Reich and the domicile and office of Hitler (though the triumph of Hitler and his companions started in the south of Germany). WW II led to destruction of most of central Berlin, thus many of the buildings which we see nowadays are reconstructed or planned and built after the war, which led to a very fragmented cityscape in most parts of the inner town. Berlin was divided into four sectors (West Berlin into the French, American and British sector, East Berlin belonge..