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Trench Warfare
This is a method of land fighting along lines called trenches that was most commonly used in the Western Front of World War I. This was a new form of strategy used. It occured when there was a revolution in firepower but not in mobility.
Categories:
Political, Social -
Einstein's Theory of Relativity
Einstein published his theory of relativity in which there are no absolutes in the universe. This theory countered Newton's ideas in which there is a constant universe instead stating that space and time can vary depending on the point of view of the observer.
Categories:
Intellectual, Social -
1918 Influenza Pandemic
Believed to originate from the United States, this was the first truly global disease epidemic. With World War I, soldiers spread the disease through battles and in trenches. They also spread it back to their homes. Overall, it was more deadly than World War I itself.
Categories:
Social, Near -
Popularization of Automobiles
During the 1920s, the automobiles became a popular mode od transportation in the industrialized world. They were invented before this date, but they became more affordable as time progressed. Automobiles went on to create new industries and jobs and to increased mobility.
Categories:
Economic, Social, Intellectual -
Invention of Radio
Guglielmo Marconi invented the method of transmitting voice across waves. This was also called the wireless telegraph and created entertainment and news to national audiences.
Categories:
Social, Intellectual -
The Big Bang Theory
This was a theory founded by Georges LeMaitre. In this theory, he concludes that the universe is continually expanding and that at one point, the universe we know was a tiny speck. This challenged modern though and traditional human understanding of the world.
Category:
Social, Intellectual -
Green Revolution
1940s-1960s
This was the new research and technology developed that made new fertilizers, pesticides, and high-yield, disease-resistant crops. This dramatically increased the amount of food produced. Rice especially was transformed to yield larger amount of food in shorter amounts of time.
Categories:
Social, Environmental, Intellectual -
First Use of Atomic Bomb
The atomic bomb was first created in the United States, called the Manhattan Project. This created mass destruction in the cities of Hiroshima and Nagasaki. It also led to the development of more nuclear weapons in countries as they prepared in case of a war.
Categories:
Political, Social, Intelectual -
First jet airliner
The first jet airliner, called the de Havilland Comet created a more commercial use of the airplane. The middle class could now afford to go on airplanes and became a common form of travel.
Categories:
Social, Intellectual -
The Polio Vaccine
The polio vaccine was developed by Jonas Salk. Prior to the vaccine, polio was a dangerous virus that killed many people. This vaccine showed the new medical innovations that were being created through scientific research.
Categories:
Social, Intellectual -
Space Race
1955-1972
This was the race between the Soviet Union and the United States for supremacy in spaceflight technology. This was also called the race to the moon. This eventually ended with a US victory with the landing of humans on Apollo 11.
Categories:
Political, Intellectual, Near -
First Cell Phone Call
This was the beginning of the use of the cell phone in today's society. It led to its increasing importance in the industrialized world. In the twentieth-century, cell phones have become a necesity for developed countries.
Categories:
Social, Intellectual -
First Personal Computer Released
The first personal computer, also called PC, was called Altair 8800. This was the first time a computer was available to the public. At first they were high-priced and mysterious to people. Over time, computer became very popular with as the price for it lowered.
Categories:
Social, Intellectual -
China's One-Child Policy
This was a population control politcy set up by the Chinese Communist Party. It mandated that families only produce one child since China was experiencing a population explosion. If China hadn't done this policy, then the environment would not have sustained the country.
Categories:
Political, Social, Environmental -
Chernobyl Accident
This was an accident that occured as a result of a flawed reactor design coupled with poorly trained personal in the USSR. It created a radioactive leak. This disaster killed thirty people and affected others with the radiation. It was health and environmental disaster.
Categories:
Social, Environmental
