The Clayton-Bulwer Treaty signed by the U.S. and Britain and provided for joint control of any canal built in Central America.
It was signed between the British and Americans in 1850 when both nations were competing amongst themselves for the construction of a canal in Central America.
The treaty led to both nations agreeing to control any canal built in the region but it was overruled in 1901 when the Americans got to British to agree to a new treaty that would give the U.S. total control.
In conclusion, option D is correct.
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