In The Influence of Sea Power upon History, Admiral Alfred Thayer Mahan argued that

A.
the U.S. Navy was the foundation of American expansion thus far.

B.
the U.S. Navy was inadequate and inferior to those of Germany and Britain.

C.
the U.S. Navy needed to invest in land acquisitions in South America and Australia.

D.
the U.S. Navy should follow the example of Tsarist Russia.

A. the U.S. Navy was the foundation of American expansion thus far.