List is much longer but I'd say there are more than just a few key events that have happened on that day.
https://www.onthisday.com/events/october/29
October 29th in history
539 BC King Cyrus "the Great" of Persia marches into Babylon, freeing Jewish captives and allowing them to return home
1268 Conradin, the last legitimate male heir of the German Hohenstaufen dynasty of Kings and Holy Roman Emperors, is executed with Frederick I, Margrave of Baden by Charles I of Sicily
1665 Battle of Mbwila [Ambuila],: Portuguese forces defeat forces of the Kingdom of Kongo and decapitate King Antonio I of Kongo / Nvita a Nkanga
1929 "Black Tuesday" Wall Street Stock Market crashes triggering the "Great Depression"
2015 China announces the end of their one-child policy after 35 years