However, German colonization, which soon accounted for one-third of the total population and disadvantaged the majority Czechs, brought the seeds of discontent, resulting in an ugly, insolvable conflict in the 20th century. He unified Brandenburg until , Lusatia until , and Silesia until under the Bohemian crown. The leaders of the Bohemian Revolt were executed in
Joseph Radetzky von Radetz , born to a noble Czech family, was a field marshal and chief of the general staff of the Austrian Empire army during these wars. A conservative economist, he and Havel often clashed. The end of the Holy Roman Empire in led to degradation of the political status of the Kingdom of Bohemia. He unified Brandenburg until , Lusatia until , and Silesia until under the Bohemian crown.