The decisive intervention was that of the United States, which declared war against Germany on April 6, 1917 — mainly the consequence of Germany’s desperate attempt to break the tightening stranglehold of the Entente’s naval blockade by unrestricted submarine warfare. With America in, a whole swarm of new belligerents — mostly Platonic rallied to the Allied cause. Honduras — July 1918 — was the last. By that time the planetary coalition against the four Central Powers already totaled 27 nations, counting in Greece, Portugal, Brazil, China, San Marino, and such nominal partners as Liberia,
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