Anna Mertel was 2 years old when The world's first international telephone call is made between St. Stephen, New Brunswick, Canada, and Calais, Maine, United States. A telephone call is a connection over a telephone network between the called party and the calling party.
Anna Mertel was 15 years old when Mahatma Gandhi forms the Natal Indian Congress (NIC) in order to fight discrimination against Indian traders in Natal. Mohandas Karamchand Gandhi was an Indian activist who was the leader of the Indian independence movement against British rule. Employing nonviolent civil disobedience, Gandhi led India to independence and inspired movements for civil rights and freedom across the world. The honorific Mahātmā – applied to him first in 1914 in South Africa – is now used worldwide. In India, he is also called Bapu and Gandhi ji, and known as the Father of the Nation.
Anna Mertel was 24 years old when The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina. The Wright brothers, Orville and Wilbur, were two American aviators, engineers, inventors, and aviation pioneers who are generally credited with inventing, building, and flying the world's first successful airplane. They made the first controlled, sustained flight of a powered, heavier-than-air aircraft on December 17, 1903, four miles south of Kitty Hawk, North Carolina. In 1904–05 the brothers developed their flying machine into the first practical fixed-wing aircraft. Although not the first to build experimental aircraft, the Wright brothers were the first to invent aircraft controls that made fixed-wing powered flight possible.
Anna Mertel was 35 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.
Anna Mertel was 50 years old when The New York Stock Exchange crashes in what will be called the Crash of '29 or "Black Tuesday", ending the Great Bull Market of the 1920s and beginning the Great Depression. The New York Stock Exchange, is an American stock exchange located at 11 Wall Street, Lower Manhattan, New York City, New York. It is by far the world's largest stock exchange by market capitalization of its listed companies at US$21.3 trillion as of June 2017. The average daily trading value was approximately US$169 billion in 2013. The NYSE trading floor is located at 11 Wall Street and is composed of 21 rooms used for the facilitation of trading. A fifth trading room, located at 30 Broad Street, was closed in February 2007. The main building and the 11 Wall Street building were designated National Historic Landmarks in 1978.