Review
A factor in the island mentality, which have own US for generations: there never has been occupation by a foreign force since 1812 war with British Empire, in the 20 Century Japan attack to the Hawaiian Islands and more recent time the events of September 11.
A factor in 1920 and 1930's California had a Spanish population who was absorbed when territory was lost in the war 1846. In the 1920's and 1930's many decedent of the Spanish colonization were deported to Mexico and help reinforce a racial divided driven by the economics, The color slave economic had a 500 years use of Africans of color and after 1863 when Lincoln out to brake the south liberate the free labor which the South and North benefit for 400 years, the story does not end for 100 years with the civil rights struggles and today we still feel the consequence.
The isolation of a truthful continental nation with exception of Canada and Russia, who developed the continental nation in different direction of the racial US, where Canada base in multi culture and Russia just a Empire.