Question: Which 18th President of the United States was present at the Battle of Young's Point?

<P0-S0>  As Commanding General, Grant worked closely with President Abraham Lincoln to lead the Union Army to victory over the Confederacy in the Civil War. <P0-S1>  Supported by Congress, Grant implemented Reconstruction, often at odds with President Andrew Johnson. <P0-S2> Ulysses S. Grant, born Hiram Ulysses Grant , (April 27, 1822 – July 23, 1885) was the Commanding General of the United States Army at the end of the American Civil War and later the 18th President of the United States from 1869 to 1877. <P0-S3>  Twice elected president, Grant led the Republicans in their effort to remove the vestiges of Confederate nationalism and slavery, protect African-American citizenship, and support economic prosperity. <P0-S4>  Although his presidency has often been criticized for multiple administration scandals and for his failure to alleviate the economic depression following the Panic of 1873, he is regarded as a President who performed relatively well in the context of his time and pursued justice for all. <SEP> <P1-S0> The Battle of Young's Point was an engagement in the American Civil War that took place in Madison Parish, Louisiana, on June 7, 1863. <P1-S1>  It had an observable influence on the direction and conduct of the Vicksburg Campaign. <P1-S2>  The inability of the Confederates to destroy the vital Union supply depot at Young's Point and thus force Maj. Gen. Ulysses S. Grant to loosen his grip on Vicksburg contributed to the ultimate surrender of the city on July 4. <SEP> <P2-S0> Adolfo Díaz Recinos (15 July 1875 Alajuela, Costa Rica – 29 January 1964, San José, Costa Rica) was the 12th President of Nicaragua between 9 May 1911 and 1 January 1917 and 18th between 14 November 1926 and 1 January 1929. <P2-S1>  Born in Costa Rica to Nicaraguan parents in 1875, he worked as a secretary for the La Luz y Los Angeles Mining Company, an American company chartered in Delaware that owned the large gold mines around Siuna in eastern Nicaragua. <P2-S2>  In this capacity, he helped channel funds to the revolt against Liberal President José Santos Zelaya, who had incurred the anger of the United States by negotiating with Germany and Japan to resurrect the proposed Nicaragua Canal. <P2-S3>  Díaz became Vice President of Nicaragua in 1910. <P2-S4>  After he became president in 1911, Díaz was forced to rely on U.S. Marines to put down a Liberal revolt, which resulted in a contingent of Marines remaining in Nicaragua for over a decade. <P2-S5>  In return, in 1914, he signed the Bryan-Chamorro Treaty, which granted the United States exclusive rights to build an inter-oceanic canal across Nicaragua. <SEP> <P3-S0> James Buchanan Jr. ( ; April 23, 1791June 1, 1868) was the 15th President of the United States (1857–61), serving immediately prior to the American Civil War. <P3-S1>  He is the only president from Pennsylvania, the only president to remain a lifelong bachelor, and the last president born in the 18th century. <P3-S2>  A member of the Democratic Party, he was the 17th United States Secretary of State and served in the United States Senate and United States House of Representatives.