Complex sentence: After World War I, under the terms of the Treaty of Versailles Weimar Germany was allowed to keep her obsolescent warships, and this included the "Hannover"; owing to budgetary constraints she was decommissioned on 17 December 1918.
Split into simpler sentences: After World War I, under the terms of the Treaty of Versailles Weimar Germany was allowed to keep her obsolescent warships, and this included the "Hannover". However, owing to budgetary constraints she was decommissioned on 17 December 1918.