Mahan argued for the construction of a canal through Central America in order for the United States to be successful as a naval force. As a result, Choice (D) is appropriate.
<h3>What is Panama Canal?</h3>
The 82 km long Panama Canal, a man-made waterway, separates North and South America by joining the Atlantic and Pacific oceans. The Panama Canal serves as a route for maritime trade and cuts through the Panamanian Isthmus.
The Panama Canal is a maritime bypass that reduces the time and expense of delivering various types of cargo.
The United States began constructing a canal through a 50-mile portion of the congested Panama isthmus in 1904, following the failures of a French construction company in the 1880s.
Hence, Option (D) is accurate.
Learn more about the Panama Canal, from:
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Your question is incomplete, probably the complete question is-
In this book, Mahan urged Americans to build a large navy and acquire colonies as Britain had. What other strategy did Mahan advocate for the United States to succeed as a naval power?
(A) developing an air force
(B) having a large standing army
(C) placing military bases in Europe
(D) building a canal through Central America