(A) After he had several peaceful talks with the Columbian government, an agreement was made to build the canal.
(B) ** Under his command, several American warships were sent as a warning to Columbia, making the development of the canal possible.
(C) The government in Panama was resistant to building the canal, but the Columbian government helped Americans persuade them.
(D) He first attempted coming to a peaceful agreement with Panama and Columbia, but once this proved to be unsuccessful, both countries were invaded.
EXPLANATIONS BELOW
Concept note-1: -Roosevelt acted quickly. In 1902, the United States reached an agreement to buy rights to the French canal property and equipment for a sum not to exceed $40 million. The U.S. then began negotiating a Panama treaty with Colombia. The U.S Department of War would direct excavation.
Concept note-2: -He firmly believed in expanding American power in the world. To do this, he wanted a strong navy. And he wanted a way for the navy to sail quickly between the Atlantic and Pacific Oceans. Roosevelt decided to build that waterway.