Complex sentence: In the late 1990s, the press labeled Germany with this term because of its economic problems, especially due to the costs of German reunification after 1990, which are estimated to amount to over €1.5 trillion (statement of Freie Universität Berlin).
Split into simpler sentences: In the late 1990s, the press labeled Germany with this term because of its economic problems, especially because of it's burden due to the German reunification after 1990. The costs of reunification are estimated to amount to over €1.5 trillion (statement of Freie Universität Berlin).