So, regarding when the words "Latin" and "America" were combined for the first time in a printed work, the term "Latin America" was first used in 1856 in a conference by the Chilean politician Francisco Bilbao in Paris. The conference had the title "Initiative of the America. Idea for a Federal Congress of Republics." The following year the Colombian writer José María Torres Caicedo also used the term in his poem "The Two Americas". Two events related with the U.S. played a central role in both works. The first event happened less than a decade before the publication of Bilbao's and Torres Caicedo works: the Invasion of Mexico or, in USA the Mexican–American War, after which Mexico lost a third of its territory. The second event, the Walker affair, happened the same year both works were written: the decision by U.S. president Franklin Pierce to recognize the regime recently established in Nicaragua by American William Walker and his band of filibusters who ruled Nicaragua for nearly a year (1856–57) and attempted to reinstate slavery there, where it had been already abolished for three decades