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Miloslav Ciz 2023-12-23 19:56:56 +01:00
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@ -12,7 +12,7 @@ Around 50 AD Heron of Alexandria, an Egyptian mathematician, created a number of
In the 3rd century Chinese mathematician Liu Hui describes operations with **negative numbers**, even though negative numbers have already appeared before. In 600s AD an Indian astronomer Brahmagupta first used the number **[zero](zero.md)** in a systematic way, even though hints on the number zero without deeper understanding of it appeared much earlier. In 9th century the Mayan empire is [collapsing](collapse.md), though it would somewhat recover and reshape.
Around the year of our Lord 1450 a major technological leap known as the **Printing Revolution** occurred. Johannes Gutenberg, a German goldsmith, perfected the process of producing books in large quantities with the movable type press. This made books cheap to publish and buy and contributed to fast spread of information and better education. Around this time the **Great Wall of China** is being built.
Around the year of [our Lord](jesus.md) 1450 a major technological leap known as the **Printing Revolution** occurred. Johannes Gutenberg, a German goldsmith, perfected the process of producing books in large quantities with the movable type press. This made books cheap to publish and buy and contributed to fast spread of information and better education. Around this time the **Great Wall of China** is being built.
They year 1492 marks the **discovery of America** by Christopher Columbus who sailed over the Atlantic Ocean, though he probably wasn't the first in history to do so, and it wasn't realized he sailed to America before his death.