Complex sentence: Walter Hallstein (17 November 1901--29 March 1982) was a German academic, diplomat, and politician, the first president of the Commission of the European Economic Community and one of the founding fathers of the European Union.
Split into simpler sentences: Walter Hallstein (17 November 1901--29 March 1982) was a German academic, diplomat, and politician. He was the first president of the Commission of the European Economic Community and counts as one of the founding fathers of the European Union.