England’s naval bases have been in all parts of the world and her fleets have at once protected them, kept open the communications between them, and relied upon them for shelter… Colonies attached to the mother country afford, therefore, the surest means of supporting abroad the sea power of a country… Britain’s power was everywhere that her ships could reach.
-Alfred Thayer Mahan’s “The Influence of Sea Power Upon History”, 1890
Based on the quote above, what did Mahan believe the United States needed to do in order to succeed as an imperial power?