<P> By the end of the 20th century , the United States dollar was considered the world 's most dominant reserve currency . The world 's need for dollars has allowed the United States government as well as Americans to borrow at lower costs , granting them an advantage in excess of $100 billion per year . </P>
<P> By the end of the 20th century , the United States dollar was considered the world 's most dominant reserve currency . The world 's need for dollars has allowed the United States government as well as Americans to borrow at lower costs , granting them an advantage in excess of $100 billion per year . </P>
when did the us dollar became the world reserve currency
when did the us dollar became the world reserve currency
By the end of the 20th century
By the end of the 20th century