Suddenly, with that treaty, the United States was no longer merely a nation but an empire—an empire with colonies stretching from the Caribbean to the China Sea. The oceans were no longer broad moats that protected and insulated an infant republic and let it grow strong, but lakes over whose surface sped the Republic’s powerful fleets, lakes on the far side of which were the Republic’s colonies and coaling stations, sources of its raw materials, markets for its industries, lakes dotted with islands—Puerto Rico, Cuba, Hawaii, the Philippines, Guam, Samoa, other, smaller Pacific islands—vital to
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