How did the U.S. intervene politically to get a treaty for the Panama Canal? What was a significant result, other than the treaty, of U.S....

The November 3, 1903 hint is key to figuring out the "significant result" of U.S. involvement with Panama, the canal, and Colombia.  November 3, 1903 is the day that Panama separated from Columbia.  Interestingly, Panama doesn't consider this date their independence day.  November 28, 1821 is Panama's independence day from Spain.  

The U.S. got involved with Panama, Colombia, and the canal in June of 1902.  That's when the U.S. Senate voted in favor...

The November 3, 1903 hint is key to figuring out the "significant result" of U.S. involvement with Panama, the canal, and Colombia.  November 3, 1903 is the day that Panama separated from Columbia.  Interestingly, Panama doesn't consider this date their independence day.  November 28, 1821 is Panama's independence day from Spain.  

The U.S. got involved with Panama, Colombia, and the canal in June of 1902.  That's when the U.S. Senate voted in favor of pursuing the possibility of getting an ocean connecting canal placed in Panama.  In January of 1903, the Hay-Herran Treaty was signed by U.S. and Colombian officials.  The treaty granted the U.S. use of the Isthmus of Panama in exchange for $10 million and an annual payment.  The U.S. Senate ratified the treaty; however, the Colombian Senate rejected it.  

At this same time, Panamanian unrest under the government of Colombia was growing.  President Roosevelt was informed that Panamanian rebels were preparing to revolt and separate from Colombia.  Instead of trying to negotiate a peaceful outcome, Roosevelt actively supported the Panamanian rebels.  Trains were rerouted to strand Colombian troops, and a U.S. naval warship even arrived in the area to further discourage any Colombian resistance.  This rebellion began on November 3, 1903.  On November 6, 1903, the U.S. recognized the Republic of Panama.  Less than two weeks after that, the U.S. signed the Hay-Bunau-Varilla Treaty with Panama.  This treaty was similar to the previous treaty, and it granted the U.S. control of the Panama Canal Zone in exchange for paying Panama $10 million and an annual payment of $250,000.