Answer: Confederation, 1867
The sinking of the Titanic, 1912
The Battle of Vimy Ridge, 1917
Women at the Voting Booths, 1918
Discovery of Insulin, 1922
The Great Depression, 1929
Second World War, 1939
Women in Space, 1992
Women’s hockey gold, 2002
Legalization of Same-Sex Marriage, 2005
Explanation: i know i added more than three but its just in case you know