Factors that promote national building

Many factors -- such as prior democratic experience, level of economic development, and social homogeneity -- can influence the ease or difficulty of nation-building, but the single most important controllable determinant seems to be the level of effort, as measured in troops, money, and time

during world war ii                                                      

i believe that the correct answer is a canadian hero.

explanation: he is celebrated as a national hero in canada for successfully thwarting a united states takeover of canada during the war of 1812.