Read this quote from President Roosevelt about the Panama Canal. A finer body of men has never been gathered by any nation than the men who have done the work of building the Panama Canal; the conditions under which they have lived and have done their work have been better than in any similar work ever undertaken in the tropics; they have all felt an eager pride in their work; and they have made not only America but the whole world their debtors by what they have accomplished.

According to his statement, why does Roosevelt believe that the entire world is indebted to the workers who built the Panama Canal?

Other nations will get out of debt more quickly by using the canal.
The US presence in Latin America stabilized the world economy.
People from around the world worked on the canal.
The canal would benefit the shipping trade of all nations.