polar bears By HaDang May 18, 1965 Soviet Union banned all polar bear hunting Jul 20, 1965 Internaton Agreement on the Conservation of Polar Bears and their habitat Canada, Denmark, Norway and the Soviet Union and the United States signed the agreement Apr 15, 1968 Canada posed hunitng restriction on Polar bears Nov 3, 1972 The United States adopted the Marine Mammal Protection Act Jul 23, 1973 Norway created a series of restriction on polar bear hunting
