Complex sentence: Metternich summered in Vienna, where he wrote his "Instructions", a memorandum which showed much greater understanding of statesmanship than any of his earlier writing and visited the Königswart estate in the autumn before taking up his new position on 4 November.
Split into simpler sentences: Metternich summered in Vienna, where he wrote his "Instructions", a memorandum showing much greater understanding of statesmanship than his earlier writing. He visited the Königswart estate in the autumn before taking up his new position on 4 November.