What strategies did Alfred Mahan's book urge countries to do

Mahan argued that British control of the seas, combined with a corresponding decline in the naval strength of its major European rivals, paved the way for Great Britain’s emergence as the world’s dominant military, political, and economic power. Mahan and some leading American politicians believed that these lessons could be applied to U. S. foreign policy, particularly in the quest to expand U. S. markets overseas.