<P> The treaty was approved by the provisional Panamanian government on December 2 , 1903 , and by the US Senate on February 23 , 1904 . Under the treaty , Panama received US $ 10 million , much of which the United States required to be invested in that country , plus annual payments of US $250,000 ; with those payments made , as well as for the purchase of the French company assets , the Canal Zone was formally turned over by Panama on May 4 , 1904 , when American officials reopened the Panama City offices of the canal company and raised the American flag . This marked the beginning point for U.S. excavation and construction which concluded in August 1914 with the opening of the canal to commercial traffic . </P>
<P> The treaty was approved by the provisional Panamanian government on December 2 , 1903 , and by the US Senate on February 23 , 1904 . Under the treaty , Panama received US $ 10 million , much of which the United States required to be invested in that country , plus annual payments of US $250,000 ; with those payments made , as well as for the purchase of the French company assets , the Canal Zone was formally turned over by Panama on May 4 , 1904 , when American officials reopened the Panama City offices of the canal company and raised the American flag . This marked the beginning point for U.S. excavation and construction which concluded in August 1914 with the opening of the canal to commercial traffic . </P>
when did panama canal zone became a us territory
when did panama canal zone became a us territory
May 4 , 1904
May 4 , 1904