James Buchanan, Jr. (April 23, 1791 – June 1, 1868) was the 15th President of the United States from 1857–1861 and the last to be born in the 18th century. To date he is the only President from the state of Pennsylvania and the only to remain a lifelong bachelor.
Adolf Hitler – Fascist dictator of Nazi Germany and perpetrator of WWII.
Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician and the leader of the National Socialist German Workers Party , popularly known as the Nazi Party. He was the ruler of Germany from 1933 to 1945, serving as chancellor from 1933 to 1945 and as head of state (Führer und Reichskanzler) from 1934 to 1945. He was named by Time Magazine as one of the 100 most influential people of the 20th century.
Within three years, Germany and the Axis powers occupied most of Europe and large parts of Africa, East and Southeast Asia and the Pacific Ocean. However, the Allies gained the upper hand from 1942 onward and in 1945 Allied armies invaded Germany from all sides. His forces committed numerous atrocities during the war, including the systematic killing of as many as 17 million civilians including the genocide of an estimated six million Jews, known as the Holocaust.
David Ricardo (18 April 1772 – 11 September 1823) was a political economist, often credited with systematizing economics, and was one of the most influential of the classical economists, along with Thomas Malthus and Adam Smith. He was also a member of Parliament, businessman, financier and speculator, who amassed a considerable personal fortune. Perhaps the most important of his contributions was the theory of comparative advantage, a fundamental argument in favor of free trade among countries and of specialization among individuals.
Wilbur Wright– Credited, along with his brother Orville, with building the first successful airplane.
The Wright brothers, Orville (August 19, 1871 – January 30, 1948) and Wilbur (April 16, 1867 – May 30, 1912), were two Americans who are generally credited with inventing and building the world’s first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight, on December 17, 1903. They are also officially credited worldwide through the Fédération Aéronautique Internationale, the standard-setting and record-keeping body for aeronautics and astronautics, as “the first sustained and controlled heavier-than-air powered flight”.
In the two years afterward, the brothers developed their flying machine into the first practical fixed-wing aircraft. Although not the first to build and fly experimental aircraft, the Wright brothers were the first to invent aircraft controls that made fixed wing flight possible.