what do you think makes the USA so special?

the americans are the most confident nation in the world,whatever trouble they will face,they always trust themselves,finally they get success.the americans know that the family is the most important part of their life,you can find that ever the president of the United States always show that he love his wife and thildren,please notice that when Obama win the campaign,the frist sentense he said is for thanking his family.and the cooperation in teams,in firms is important aspect in american's career.