List the four major areas of concern in canada foreign policy after ww2

Through its history, Canada has taken a series of increasingly bold steps to develop from a British colony into an independent nation. Both the world wars were turning points, with Canada's military sacrifices giving it the strength and confidence to demand its own voice on the world stage. In the postwar era, Canada has maintained its role in both Western and global alliances. However, relations with the United States – because of its singular importance to Canadian security and trade – have dominated Canada's foreign policy since Confederation.