Final answer:
The United States was most interested in building a canal in Central America to provide easy passage for the navy and strategic refueling stations for American ships.
Step-by-step explanation:
The United States was most interested in building a canal through Central America to provide the **United States Navy** easy passage between the Atlantic and Pacific Oceans. This would allow for quicker and more efficient movement of naval fleets and resources. Additionally, the canal would provide strategic **refueling stations for American ships**, enabling the United States to maintain a strong presence in the region.
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