On this day in history

Source: HistoryNet.com

1644: Wheat planted in Canada for the first time.
1796: Upper Canada Parliament moves from Newark to York.
1813: American forces capture York (present-day Toronto), the seat of government in Ontario.
1846: John A. Macdonald from Kingston gives his maiden speech in the Assembly of the Province of Canada, advocating a repeal of the usury laws.
1861: President Abraham Lincoln suspends the writ of habeas corpus.
1928: Prince Edward Island changes to driving on the right hand side of the road.
1941: The Greek army capitulates to the invading Germans.
1950: South Africa passes the Group Areas Act, formally segregating races.
1961: The United Kingdom grants Sierra Leone independence.
1967: Prime Minister Lester Pearson officially opens Expo '67 in Montréal.
1975: Saigon is encircled by North Vietnamese troops.
1978: The Afghanistan revolution begins.
1989: Protesting students take over Tiananmen Square in Beijing, China.
2006: Supreme Court of Canada rules in a 4-3 decision, to uphold key provisions of the national DNA databank that stores genetic profiles of sexual and dangerous offenders.