This Day in History: 0000-10-21

21 Oct to 2 Jun – The Crusader armies began their siege of Antioch, defeating two Muslim armies sent to relieve the city and finally conquering it on 2 Jun (1097-1098).
21 Oct – Ferdinand Magellan discovered the Straits that would later bear his name, connecting the Atlantic and the Pacific (1520).
21 Oct – Admiral Horatio Nelson commanding the British fleets won one of the greatest victories in naval history, defeating the combined French and Spanish fleets in the Battle of Trafalgar (1805).