Who was elected elected President of Germany in 1925 and whose death led to the referendum on merging the posts of Chancellor and President?
Paul von Hindenburg Paul Ludwig Hans Anton von Beneckendorff und von Hindenburg (   ), known generally as Paul von Hindenburg (] ; 2 October 1847 – 2 August 1934) was a German military officer, statesman, and politician who largely controlled German policy in the second half of World War I and served as the elected President of Germany from 1925 until his death in 1934. He played the key role in the Nazi "Seizure of Power" in January 1933 by appointing Adolf Hitler chancellor of a "Government of National Concentration", even though the Nazis were a plurality in cabinet.
Johannes Rau Johannes Rau (] ; 16 January 193127 January 2006) was a German politician of the SPD. He was President of Germany from 1 July 1999 until 30 June 2004, Minister President of North Rhine-Westphalia from 20 September 1978 to 9 June 1998 and President of the Bundesrat from 1982-83.