History of the Academy Awards

With the 90th anniversary of the Academy Awards approaching, I looked into the history of the ceremony. 90 years of “firsts” and notable moments are shown in this timeline:¬†https://docs.google.com/spreadsheets/d/10hY7DICW9t-R9CuxzqYlifova_Q5u3nJaIVbiLNRuq0/edit#gid=0