Harold G Arnold was 7 years old when Archduke Franz Ferdinand and his wife, Sophie, Duchess of Hohenberg, were assassinated by a Yugoslav nationalist named Gavrilo Princip in Sarajevo, sparking the outbreak of World War I. Archduke Franz Ferdinand, Archduke of Austria-Este was a member of the imperial Habsburg dynasty, and from 1896 until his death the heir presumptive (Thronfolger) to the Austro-Hungarian throne. His assassination in Sarajevo precipitated Austria-Hungary's declaration of war against Serbia, which in turn triggered a series of events that resulted in Austria-Hungary's allies and Serbia's declaring war on each other, starting World War I.
Harold G Arnold was 21 years old when Walt Disney character Mickey Mouse premieres in his first cartoon, "Plane Crazy". Walter Elias Disney was an American entrepreneur, animator, voice actor and film producer. A pioneer of the American animation industry, he introduced several developments in the production of cartoons. As a film producer, Disney holds the record for most Academy Awards earned by an individual, having won 22 Oscars from 59 nominations. He was presented with two Golden Globe Special Achievement Awards and an Emmy Award, among other honors. Several of his films are included in the National Film Registry by the Library of Congress.
Harold G Arnold was 23 years old when Great Depression: In a State of the Union message, U.S. President Herbert Hoover proposes a $150 million (equivalent to $2,197,000,000 in 2017) public works program to help generate jobs and stimulate the economy. The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the United States. The timing of the Great Depression varied across nations; in most countries it started in 1929 and lasted until the late-1930s. It was the longest, deepest, and most widespread depression of the 20th century. In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline.
Harold G Arnold was 34 years old when World War II: Nazi Germany invades the Soviet Union in Operation Barbarossa. Nazi Germany is the common English name for Germany between 1933 and 1945, when Adolf Hitler and his Nazi Party (NSDAP) controlled the country through a dictatorship. Under Hitler's rule, Germany was transformed into a totalitarian state that controlled nearly all aspects of life via the Gleichschaltung legal process. The official name of the state was Deutsches Reich until 1943 and Großdeutsches Reich from 1943 to 1945. Nazi Germany is also known as the Third Reich, from German Drittes Reich, meaning "Third Realm" or "Third Empire", the first two being the Holy Roman Empire and the German Empire. The Nazi regime ended after the Allied Powers defeated Germany in May 1945, ending World War II in Europe.
Harold G Arnold was 48 years old when Disneyland Hotel opens to the public in Anaheim, California. The Disneyland Hotel is a resort hotel located at the Disneyland Resort in Anaheim, California, owned by the Walt Disney Company and operated through its Parks, Experiences and Consumer Products division. Opened on October 5, 1955, as a motor inn owned and operated by Jack Wrather under an agreement with Walt Disney, the hotel was the first to officially bear the Disney name. Under Wrather's ownership, the hotel underwent several expansions and renovations over the years before being acquired by Disney in 1988. The hotel was downsized to its present capacity in 1999 as part of the Disneyland Resort expansion.
Harold G Arnold was 56 years old when John F. Kennedy was assassinated by Lee Harvey Oswald in Dallas, Texas; hours later, Lyndon B. Johnson was sworn in aboard Air Force One as the 36th President of the United States. John Fitzgerald Kennedy, commonly referred to by his initials JFK, was an American politician who served as the 35th President of the United States from January 1961 until his assassination in November 1963. He served at the height of the Cold War, and the majority of his presidency dealt with managing relations with the Soviet Union. As a member of the Democratic Party, Kennedy represented the state of Massachusetts in the United States House of Representatives and the U.S. Senate prior to becoming president.
Harold G Arnold was 70 years old when Star Wars is released in theaters. Star Wars is a 1977 American epic space opera film written and directed by George Lucas. It is the first film in the original Star Wars trilogy and the beginning of the Star Wars franchise. Starring Mark Hamill, Harrison Ford, Carrie Fisher, Peter Cushing, Alec Guinness, David Prowse, James Earl Jones, Anthony Daniels, Kenny Baker, and Peter Mayhew, the film focuses on the Rebel Alliance, led by Princess Leia (Fisher), and its attempt to destroy the Galactic Empire's space station, the Death Star.