Answer: D
Explanation: In his 1906 Annual Address to Congress, President Roosevelt described his actions with regard to the Panama Canal as “the most important action I have taken in foreign affairs.” He stated that: “The construction of the Panama Canal has been a great, and in the main a successful, undertaking, which has not only been of importance to the world, but has also been a source of pride to the people of the United States.” He further noted that the Canal was “a means of promoting the welfare of the people of all countries by bringing the nations of the world into closer contact.”