http://www.viralnova.com/historical-coincidences/
http://www.brainjet.com/random/4081/14-freakiest-coincidences-of-history/#page=1
http://mentalfloss.com/article/30093/edgar-allan-poes-eerie-richard-parker-coincidence
https://en.wikipedia.org/wiki/Lincoln%E2%80%93Kennedy_coincidences_urban_legend
https://en.wikipedia.org/wiki/The_Wreck_of_the_Titan:_Or,_Futility
https://en.wikipedia.org/wiki/RMS_Titanic
https://en.wikipedia.org/wiki/List_of_largest_empires
https://en.wikipedia.org/wiki/Mongol_Empire
https://en.wikipedia.org/wiki/Mongol_invasions_of_Japan
https://en.wikipedia.org/wiki/Halley%27s_Comet
http://www.todayifoundout.com/index.php/2013/10/samuel-clemens-born-died-year-halleys-comet/
https://www.biography.com/people/sacagawea-9468731
https://smarthistoryblog.com/2016/10/28/the-curse-of-tamerlane/
https://en.wikipedia.org/wiki/Timurid_Empire
https://en.wikipedia.org/wiki/Eastern_Front_(World_War_II)#Casualties
https://en.wikipedia.org/wiki/27_Club
http://all-that-is-interesting.com/jim-twins
https://www.historyanswers.co.uk/people-politics/did-this-painting-foresee-the-rise-of-adolf-hitler/
https://en.wikipedia.org/wiki/Jerry_Parr
https://en.wikipedia.org/wiki/Attempted_assassination_of_Ronald_Reagan
https://en.wikipedia.org/wiki/Ronald_Reagan
https://en.wikipedia.org/wiki/Wilmer_McLean
http://www.history.com/this-day-in-history/thomas-jefferson-and-john-adams-die
https://www.thoughtco.com/what-were-john-adams-last-words-103946
https://en.wikipedia.org/wiki/D-Day_Daily_Telegraph_crossword_security_alarm
https://en.wikipedia.org/wiki/Assassination_of_Archduke_Franz_Ferdinand_of_Austria
https://en.wikipedia.org/wiki/Gavrilo_Princip