January 4 Columbus left new world on return from 1st voyage January 9 1st sight of manatees by Christopher Columbus January 12 Last day for all Jews to leave Sicily January 16 Columbus returns to Spain on his 1st trip January 19 France cedes Roussillon and Cerdagne to Spain by treaty of Barcelona March 15 Christopher Columbus returns to Spain after 1st new world voyage May 4 Spanish Pope Alexander VI divides America between Spain and Portugal May 23 King Charles VIII and Maximilian I of Austria signs Peace of Senlis August 19 Maximilian I of Austria becomes Roman Catholic German emperor September 24 Columbus' 2nd expedition to New World September 25 Columbus sails with 17 ships on 2nd voyage to America October 30 Christopher Columbus discovers island of Dominica November 3 Christopher Columbus discovers island of Dominica November 11 Columbus discovers Saba November 19 Christopher Columbus discovers Puerto Rico, on his 2nd voyage