How and why did american domestic and foreign policies change for 1890 to 1918in 1890 alfred t mahan’s book explained the importance of having a strong navy american then increased the size of its navy to protect itself territorial expansion economic interests spread of anglo-saxon values 1- america grewlatin americanhawaii2. spanish- american warpowergaining territories3. world war 1 a. well thought before entering the war b. trying to stay on the peaceful sidethis is a essay