The president of the United States is the head of state and head of government of the United States, indirectly elected to a four-year term via the Electoral College. The office holder leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces. Since the office was established in 1789, 45 people have served in 46 …

There have been 49 vice presidents of the United States since the office came into existence in 1789. Originally, the vice president was the person who received the second most votes for president in the Electoral College.However, in the election of 1800 a tie in the electoral college between Thomas Jefferson and Aaron Burr led to the selection of the president by the House …

1800–1851: Origin and Jefferson's contribution. James Madison of Virginia is credited with the idea of creating a congressional library, first making such a proposition in 1783. The Library of Congress was subsequently established on April 24, 1800, when President John Adams signed an act of Congress also providing for the transfer of the seat of government from Philadelphia to …

The American Civil War (April 12, 1861 – May 9, 1865; also known by other names) was a civil war in the United States between the Union (states that remained loyal to the federal union, or "the North") and the Confederacy (states that voted to secede, or "the South"). The central cause of the war was the status of slavery, especially the expansion of slavery into territories acquired as a ...

This resulted in several anomalies. It has been alleged that in 1849, Senate President pro tempore David Rice Atchison was president for a day, although all scholars dismiss that claim. In 1877, due to the controversy over the Compromise of 1877, Rutherford B. Hayes was sworn in secretly on March 3 before Ulysses S. Grant's term ended on March 4—raising the question if the United …

1974 – Nelson Rockefeller is sworn in as Vice President of the United States under President Gerald Ford under the provisions of the 25th Amendment to ... 1865 – Minnie Maddern Fiske, American actress and ... 2012 – Peter Struck, German lawyer and politician, 13th German Federal Minister of Defence (b. 1943) 2013 – Winton Dean ...

Donald Trump's tenure as the 45th president of the United States began with his inauguration on January 20, 2017, and ended on January 20, 2021. Trump, a Republican from New York City, took office following his Electoral College victory over Democratic nominee Hillary Clinton in the 2016 presidential election, in which he did not win a plurality of the popular vote.

The second inauguration of Barack Obama as president of the United States was the 57th inauguration and marked the commencement of the second and final term of Obama as president and Joe Biden as vice president.A private swearing-in ceremony took place on Sunday, January 20, 2013, in the Blue Room of the White House.A public inauguration ceremony took place on …

Office vacant December 28, 1832 – March 4, 1833: 8 March 4, 1833 – March 4, 1837 Martin Van Buren: Democratic: 1832: 9 March 4, 1837 – March 4, 1841 Richard Mentor Johnson: Democratic: 1836: Martin Van Buren: 10 March 4, 1841 – April 4, 1841 John Tyler: Whig: 1840: William H. Harrison: Office vacant April 4, 1841 – March 4, 1845