In Indonesia, some of them became well-known figures in history, such as C.G.C. Reinwardt (founder and first director of Bogor Botanical Garden), Walter Spies (German of Russian origin, who became the artist that made Bali known to the world), and Franz Wilhelm Junghuhn (owner of a big plantation in the south of Bandung and dubbed "the Humboldt of the East" because of his ethno-geographical notes). Members of the German religious group known as Templers settled in Palestine in the late 19th century and lived there for several generations, but were expelled by the British from Mandatory Palestine during World War II, due to pro-Nazi sympathies expressed by many of them. Communist East Germany had relations with Vietnam and Uganda in Africa, but in these cases population movement went mostly to, not from, Germany. After the German reunification, a large percentage of "guest workers" from Communist nations sent to East Germany returned to their home countries. See also: German colonial empire and List of former German colonies   There have been ethnic Germans in Australia since the founding of the New South Wales colony in 1788, Governor Arthur Phillip (the first Governor of New South Wales) had a German father. But, the first significant wave of German immigration was in 1838. These Germans, mostly Prussian immigrants (but also winegrowers from the Hesse-Nassau state and the Rheingau). From there after, thousands of Germans emigrated to Australia until World War I. Also, German Australian was the most identified ethnicity behind English and Irish in Australia until World War I. After World War II, a huge number of Germans emigrated to Australia to escape the war-torn Europe. From Celtic times the early Germanic tribes settled from the Baltic all the way to the Black Sea until the great migrations of the 4-6th century AD. Medieval Germans migrated eastwards during the medieval period Ostsiedlung until the flight, evacuation and expulsion of Germans after World War II; many areas in Central and Eastern Europe had an ethnic German population. In the Middle Age, Germans were invited to migrate to Poland and the central and eastern regions of the German Holy Roman Empire and also the Kingdom of Hungary following the Mongol invasions of the 12th century, and then once again during the late 17th century after the Austrian-Ottoman wars to set up farms and repopulate the eastern regions of the Austrian Empire and Balkans.