Question: Which American politician, soldier, and diplomat born in 1819 commanded the Second Military District of the U.S. Army?

full_context: Document 1: Confederate States Army: The Confederate States Army (C.S.A.) was the military ground force of the Confederate States of America (Confederacy) during the American Civil War (1861-1865). On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate president, Jefferson Davis (1808-1889), a graduate of the U.S. Military Academy on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican–American War (1846-1848), later a United States Senator from Mississippi and U.S. Secretary of War in the administration of 14th President Franklin Pierce (1853-1857). By March 1861, the Provisional Confederate Congress expanded the provisional forces and established a more permanent Confederate States Army.
Document 2: 4th Regiment, Arkansas State Troops: At the beginning of the war, the Arkansas Succession Convention created the Provisional Army of Arkansas. The Provisional Army was to consist of two divisions, the 1st Division in the western part of the state was to be commanded by Brigadier General Pearce, and the 2nd Division in the eastern half of the state, commanded by Major General James Yell. The intent of the Secession Convention was to transfer these state troop regiments into Confederate service as quickly as possible, to avoid the cost of paying for a large state army. The troops of the eastern division were transferred to the command of Brigadier General Hardee in July 1861, but the troops of the western division under Brigadier General Pearce were not transferred to Confederate service before they became engaged in the Battle of Wilson's Creek. The unit was composed of the following volunteer companies:
Document 3: Sedgwick Monument (West Point): Sedgwick Monument is a memorial to Union General John Sedgwick at West Point. "Uncle John" Sedgwick was born in Cornwall, Connecticut, 67 miles northeast of West Point, New York. Sculpted by Launt Thompson and dedicated in 1868, the monument was erected by officers and soldiers of the 6th Army Corps to commemorate Major General Sedgwick and his death at the Battle of Spotsylvania Court House in 1864. Originally, the monument was located on the northwest edge of the Plain, it was later relocated to its current location at Trophy Point across Washington Road from Battle Monument. Legend holds that if a cadet is deficient in academics, the cadet should go to the monument at midnight the night before the term-end examination, in full dress, under arms, and spin the rowels on the monument’s spurs. With the resulting good luck, the cadet will pass the test.
Document 4: Daniel Clark (New Hampshire politician): Daniel Clark (October 24, 1809January 2, 1891) was an American politician who served in the New Hampshire legislature and the United States Senate.
Document 5: 3rd Regiment, Arkansas State Troops: At the beginning of the war, the Arkansas Succession Convention created the Provisional Army of Arkansas. The Provisional Army was to consist of two divisions: the 1st Division in the western part of the state was to be commanded by Brigadier General Pearce, and the 2nd Division in the eastern half of the state, commanded by Major General James Yell. The intent of the Secession Convention was to transfer these state troop regiments into Confederate service as quickly as possible, to avoid the cost of paying for a large state army. The troops of the eastern division were transferred to the command of Brigadier General Hardee in July 1861, but the troops of the western division under Brigadier General Pearce were not transferred to Confederate service before they became engaged in the Battle of Wilson's Creek.
Document 6: Daniel Pelosi: Daniel Pelosi (born August 2, 1963 in Center Moriches, New York ) is the convicted murderer of Wall Street financier Ted Ammon, the widower of Generosa Ammon.
Document 7: William H. Wickham: William Hull Wickham (July 30, 1832 – January 13, 1893) was the 81st Mayor of New York City and anti-Ring Democrat who helped to topple corrupt politician Boss Tweed.
Document 8: Union Army Divisions, Departments and Districts: During the American Civil War, a department was a geographical command within the Union's military organization, usually reporting directly to the War Department. Many of the Union's departments were named after rivers or other bodies of water, such as the Department of the Potomac and the Department of the Tennessee. The geographical boundaries of such departments changed frequently, as did their names. As the armies became larger Departments began to be subordinated to Military Divisions, and the Departments were often sub divided into Districts and from 1862 Subdistricts. Much information on Civil War departments can be found in Eicher & Eicher, "Civil War High Commands".
Document 9: Sheldon Silver: Sheldon "Shelly" Silver (born February 13, 1944) is a former lawyer and Democratic Party politician from New York City, who rose to become the powerful Speaker of the New York State Assembly in 1994 until his arrest on federal corruption charges in 2015. He was initially convicted, but his conviction was overturned.
Document 10: Daniel Patrick Moynihan: Daniel Patrick "Pat" Moynihan (March 16, 1927 – March 26, 2003) was an American politician, sociologist, and diplomat. A member of the Democratic Party, he represented New York in the United States Senate and served as an adviser to Republican President Richard Nixon.
Document 11: District of Alaska: The District of Alaska was the governmental designation for Alaska from May 17, 1884 to August 24, 1912, when it became Alaska Territory. Previously it had been known as the Department of Alaska. At the time, legislators in Washington, D.C., were occupied with post-Civil War reconstruction issues, and had little time to dedicate to Alaska. General Jefferson C. Davis, a U.S. Army officer, was put in charge as the first commander of the Department of Alaska, which between 1884 and 1912 was renamed the District of Alaska and was appointed a civil government by President Chester A. Arthur with the passage of the First Organic Act. During the Department era, Alaska was variously under the jurisdiction of the U.S. Army (until 1877), the United States Department of the Treasury (from 1877 until 1879) and the U.S. Navy (from 1879 until 1884), but now the area had its own government.
Document 12: Second Military District: The Second Military District of the U.S. Army was a temporary administrative unit of the U.S. War Department that existed in the American South. The district was stipulated by the Reconstruction Acts during the Reconstruction period following the American Civil War. It included the territories of North and South Carolina, and acted as the de facto military government of those states while a new civilian government was being re-established. Originally commanded by Major General Daniel Sickles, after his removal by President Andrew Johnson on August 26, 1867, Brigadier General Edward Canby took over command until both states were readmitted in July 1868.
Document 13: II Corps (Union Army): There were five corps in the Union Army designated as II Corps (Second Army Corps) during the American Civil War. These formations were the Army of the Cumberland II Corps commanded by Thomas L. Crittenden from October 24, 1862, to November 5, 1862, later renumbered XX Corps; the Army of the Mississippi II corps led by William T. Sherman from January 4, 1863, to January 12, 1863, renumbered XV Corps; Army of the Ohio II Corps commanded by Thomas L. Crittenden from September 29, 1862, to October 24, 1862, transferred to Army of the Cumberland; Army of Virginia II Corps led by Nathaniel P. Banks from June 26, 1862, to September 4, 1862, and Alpheus S. Williams from September 4, 1862, to September 12, 1862, renumbered XII Corps; and the Army of the Potomac II Corps from March 13, 1862, to June 28, 1865. Of these five, the one most widely known was the Army of the Potomac formation, the subject of this article.
Document 14: Chester A. Arthur: Chester Alan Arthur (October 5, 1829 – November 18, 1886) was an American attorney and politician who served as the 21st President of the United States (1881–85); he succeeded James A. Garfield upon the latter's assassination. At the outset, Arthur struggled to overcome a slightly negative reputation, which stemmed from his early career in politics as part of New York's Republican political machine. He succeeded by embracing the cause of civil service reform. His advocacy for, and subsequent enforcement of, the Pendleton Civil Service Reform Act was the centerpiece of his administration.
Document 15: Daniel Sickles: Daniel Edgar Sickles (October 20, 1819May 3, 1914) was an American politician, soldier, and diplomat.
ground_truth: Daniel Sickles