<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 dollar became the world currency
when did the dollar became the world currency
By the end of the 20th century
By the end of the 20th century