In 1949, Newfoundland and Labrador became the 10th province of Canada. In 1956, Canadian Lester Pearson, who later became prime minister, helped end the Suez Crisis. As a result, he won the Nobel Peace Prize. In 1965, Pearson helped Canada get a new flag, the Maple Leaf. Before that, Canadians had used the Red Ensign. In 1982, Canada changed its constitution, including a new Canadian Charter of Rights and Freedoms. The main part of the Constitution is still the 1867 British North America Act.