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The bronze age was significant as it was the first time humans used metal in their tools, which made the tools stronger and much more efficient. This discovery of using metal would lead to the iron age and even today, most of our tools are made of metal due to the discovery made.

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Central Asian People tame horses                    Around 3000 BC

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Central Asian People tame horses                    Around 3000 BC

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People taming horses is significant as taming horses would lead to horses being used as a main form of transport for many years, for example riding domesticated horses to get from one place to another. Horses also made the work that humans had to do much easier and efficient.

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Like the Bronze Age, the Iron Age was significant because it helped humans make even more efficient tools, weapons, and other objects compared to bronze and other metals that were used before. It was also much more durable than bronze which humans were using before, and it was more commonly found than other metals which led to many uses of iron

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Arabic Numerals Instead of Roman Numeral Appear in Europe

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Arabic Numerals Instead of Roman Numeral Appear in Europe

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In the 12th century, somewhere between the year 1100-1200, Arabic Numerals (1, 2, 3, 4, 5, etc) started to appear in Europe, instead of the roman numerals.

These numerals are similar to the ones we use today, and the way we do math, and other things that need numbers is massively based off of this system

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Johann Gutenberg invents the printing press: 1450

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Johann Gutenberg invents the printing press: 1450

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The printing press was important in the way that it allowed books and other forms of text to be printed and distributed much, much more efficiently and also in larger numbers, as the process was done could be done by operating the invention instead of having each text be manually written. Today, more modern versions of the printing press are still used for the same intention

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In 1609, Galileo created his own telescope, one that was improved over other telescopes at the time. The new telescope greatly increased the knowledge of space as they were now able to see planets in the distance much more clearly, for example, he was able to see and identify four moons orbiting Jupiter. The telescope also helped prove that the earth as well as the other planets orbited around the sun

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1662 was the year of the last confirmed sighting of a dodo, which is also considered when the dodo went extinct. The extinction of the dodo is significant, because its one of the most well known examples of how humans caused the extinction of an animal

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In 1665, Isaac Newton discovered gravity. This discovery of gravity is an extremely important discovery in science, and helped create more discoveries in science because without the discovery of gravity, other discoveries would not exist, and the discovery of gravity helps explain how objects would fall down, instead of going in any other direction.

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The discovery of Halley's comet is one of the most well known comets, and the discovery is significant because it was the first time that showed how comets can be seen multiple times as they orbit around, for example, every 76 years halley's comet is visible as it comes back around.

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In 1781, Uranus the 7th planet in our solar system was discovered. This discovery of the planet introduced another whole planet into the solar system that humans knew then, which increased our knowledge about the solar system. It was also the first planet that was discovered by using a telescope.

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Edward Jenner discovers vaccination against smallpox: 1796

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Edward Jenner discovers vaccination against smallpox: 1796

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The discovery of the smallpox vaccine is a significant event, due to it being the first successful vaccine to be discovered, which in the future and in the present day, helps save millions of lives by helping people be immune to diseases. At the time smallpox was also one of the most deadly diseases, and the discovery of the vaccine would have saved a large number of lives.

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The invention of dynamite greatly increased the efficiency and safety as this new explosive was created to make mining and clearing spaces for buildings, etc., much easier, with much more power and also being safer to use than previous explosives used.

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Thomas Edison invents the lightbulb: 1880

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Thomas Edison invents the lightbulb: 1880

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The invention of the lightbulb is one of the most well-known inventions made in history. The lightbulb impacted the working industry by allowing workers to work overnight under the light of a lightbulb, while before work would stop at night due to not having enough light. The lightbulb is also an extremely convenient source of light, as we can have light from pressing a switch.

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Einstein discovers the theory of relativity: 1905

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Einstein discovers the theory of relativity: 1905

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Einstein's theory of relativity is an important theory in the field of science, as it helps us increase our understanding about how time and space works, and many scientific discoveries and knowledge about space and time is due to Einstein's theory of relativity.

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James Webb Space Telescope launched: 2021

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James Webb Space Telescope launched: 2021

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The James Webb space telescope is a recent space telescope put into space. The significance of this telescope includes the new technology on the James Webb telescope, having much more high quality and high resolution views. The James Webb telescope will help people to learn and understand more about space, including objects at a much further distance from Earth