1920: America's Great War is an alternate history novel by the Michigan economics professor Robert Conroy. It was first published as an ebook by Baen Books in November 2013. A hardcover edition followed in December of the same year and then a paperback edition in March 2015. The novel depicts a fictional world in which Imperial Germany had emerged victorious early in World War I and launches a surprise invasion of the United States in 1920 from Mexico. The book's premise is based on an actual plan that Germany had proposed to Mexico during the war.
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