This chapter covers the Verein für Sozialpolitik, Sering’s professorship in Bonn, the Althoff System, Bismarck, and Colonialism. It also explores the expulsion of Poles and Jews from eastern Germany in 1885, the involvement of Sering, Schmoller, and Tiedemann in the writing of the memorandum for the creation of the Program of Inner Colonization, and how the program began in 1886. It discusses Sering’s time as a professor in Bonn during 1884 to 1889, and the publication of his book on the North America trip, Die landwirthschaftliche Konkurrenz Nordamerikas in Gegenwart und Zukunft. Landwirthschaft, Kolonisation und Verkehrswesen in den Vereinigten Staaten und in Britisch-Nordamerika (The Agricultural Competition of North America in the Present and Future. Agriculture, Colonization, and Transportation in the United States and in British North America) in 1887. Sering became a professor in Berlin in 1889. Inner Colonization during the Caprivi Era is discussede, alongside Hugenberg and Schwerin. In 1893, Sering published The Inner Colonization in Eastern Germany. Max Weber, who was rabidly anti-Polishm, supported Sering. Sering’s second journey to America was in 1890, where he attended the World’s Fair in Chicago. The chapter also covers the Frederick Jackson Turner Frontier Thesis, Hohenlohe, Werner Sombart, and Socialists of the Chair.