Three hundred years ago,the emigrants from England arrived at Maryland acrossing the Atlantic by "May Flower" to search for a "pure"land for the puritans to then American Dream has come gives every person all over the world equal can achieve their dreams by hundred years later,this country has become a rich Dream doesn't fade the development of the history,it has many meanings is the American Dream?different people hold different at any rate,American Dream contains several factors below:America offers every person an opportunity to succeed;Success depends on one's ability and effort regardless of the fortuitous circumstances of birth or position;Every person has equal rights;Every person has free it comes to the 21st century-the information age,Bill Gates's success indicated that only if you have wisdom and talent,you can succeed in American Dream has changed,compared with its original 's the true motivation behind American Dream?Some historians considered it the thirst for wealth .Pursuing money is the eternal theme of American over pursuit of wealth makes American Dream turn bad and lost its attraction to people worldwide the changes of the times,the influence of American Dream may become less and increasing number of people confess to having lost faith in the American Dream.