1. Paper
Paper is a thin material made from fibrous substances ranging from a few hundred micrometers to several centimeters thick, usually derived from plants, and formed by hydrogen bonding without adhesives. Paper is typically used in thin sheets but can also be shaped into larger objects (like papier-mâché). It is primarily produced from wood pulp or cellulose. The most culturally significant type of paper is writing paper. Additionally, paper is used for packaging, wallpaper, toilet paper, and in crafts, especially in Japan and China.
Writing paper was invented by the Chinese during the Eastern Han dynasty, between 25 and 220 AD. By the 8th century, it spread to the Islamic world, and by the 11th century, it reached Europe. The invention of writing paper is considered a major milestone for humanity, as before its creation, writing was done on wooden tablets or white silk scrolls. Today, many ancient paper scrolls are still preserved.


2. Printed Newspapers
Although many modern mass media channels have gained prominence today, printed newspapers, though less common, remain a traditional and influential source of information for certain groups. The printed newspaper was invented by the Romans to convey information through capital letters. The first known newspaper, The Acta Diurna, appeared in 131 BC, primarily covering politics, social events, births, and deaths. News was printed on metal or stone tablets and displayed in public spaces for all to see.
The first printed newspaper on paper was created in Venice (Italy) in 1566 when the government began distributing printed flyers in the streets. From there, the printed newspaper spread in popularity. The first newspaper in England, The Gazette, was printed in Oxford and later renamed The London Gazette, which still exists today.


3. The Number Zero
This is one of the greatest inventions in world history, despite the centuries-long debate surrounding it. Numbers are commonly used in daily life, often without consideration of their origins. Zero is a crucial concept symbolizing 'nothing' and holds a position in the counting system, also being essential in computing.
However, the decimal system we use today has been around for approximately 5500 years, and the symbol for zero was introduced much later. This came about because early humans did not have a need for zero. It wasn’t until the late 19th century, with the advent of Peano's set theory, that zero was officially recognized as a natural number and became widely used.


4. The Marathon Race
Sports have ancient origins. In 490 BCE, when the Persian army, led by Darius I, landed at the Marathon plain, about 60 km northeast of Athens (Greece), Miltiades feared the city’s loss. He dispatched a swift messenger, Pheidippides, to Sparta requesting help. Unfortunately, after running 150 km over two days, Pheidippides was met with a direct refusal. Miltiades then rallied a 10,000-strong army to face Darius I’s 100,000 soldiers.
At dawn, the Athenian forces struck the Persian camp by surprise. The Persians, furious, gave chase, but were ambushed, suffering over 6,000 casualties while the Athenians only lost around 200 men. Overjoyed by the victory, Miltiades ordered Pheidippides to return to Athens with the good news. Despite his injuries, Pheidippides raced back to Athens’ central square, shouting, "We have won! Rejoice!" before collapsing and dying. To commemorate the victory and honor Pheidippides’ heroic effort, the first Olympic Games in 1896 introduced the Marathon race. Initially set at 40 km, the distance was later corrected to 42 km in 1920 and is still in use today.


5. The Compass
The compass, which originated in China over 2,000 years ago, was initially developed by Zuo Chongzhi during the Han dynasty. It was created primarily for determining the southern direction. The early compass consisted of a spoon-shaped magnet, placed on a polished bronze base to minimize friction. The spoon’s handle would align with the south when the compass came to rest. By the Tang dynasty, the compass was perfected and became widely used in navigation, replacing the previous reliance on celestial observations.
As trade between Arabs and Chinese grew, the compass was introduced to Europe in the late 12th century, and then to Northern Europe in the 13th century. Despite being invented over 2,500 years ago, the compass remains a crucial tool in maritime navigation, wilderness exploration, aviation, and even space travel. It stands as one of the most significant inventions of ancient China.


6. The Wheel
The wheel is regarded as one of humanity’s greatest inventions from ancient times. Its development has been pivotal to the progress of modern automotive and transportation industries. While the exact time and place of the wheel’s origin remain a mystery, some sources suggest it was first invented by the Elamites, as evidenced by their early sculptures depicting the wheel, dating back to the late Neolithic period.
Initially, wheels were made from stone, logs, or clay and were affixed to the ground with a central pin. The effort required to move them was substantial. Over time, as metalworking progressed, wheels became smoother and more efficient, with wood being shaped into circular forms. The addition of horizontal bars underneath to prevent the wheel from slipping was a significant improvement. People then began using two wheels with horizontal bars, one in the front and one in the back, forming a four-wheeled cart. Through the ages, the wheel has been refined to meet the needs of humanity and continues to evolve today.


7. Silk
Silk is no longer an unfamiliar product in today's society, with its wide variety of colors and brands used in fashion, gifts, and ceremonial offerings. But did you know that silk originated around 6000 BCE in China?
Indeed, the art of silk weaving first emerged in China. Initially, only royalty could afford or receive silk as a gift, but as clothing needs grew, silk gradually became more accessible to various social classes in China. In July 2007, archaeologists discovered finely woven and dyed silk fabric in a tomb in Jiangxi Province, dating back to the Eastern Zhou Dynasty, about 2,500 years ago, confirming the origins of this product. Ancient Chinese emperors went to great lengths to keep the silkworm breeding process a secret to maintain a monopoly on silk production. However, around 200 BCE, the Koreans learned the craft, followed by the people of Khotan in the early 1st century CE, then the Indians around 300 CE, and it eventually spread throughout other Asian nations.


8. Chocolate
Chocolate may seem like a modern candy compared to others such as hard candy or lollipops, but it is far from new. Over 3,000 years ago, the Aztecs, Toltecs, and Mayans used cocoa beans to create chocolate and even made a drink from the beans, believing it provided a powerful source of energy.
Later, Spanish colonizers brought chocolate back to Europe, and its sweet flavor soon spread worldwide. Today, chocolate is a symbol of love and is enjoyed by many. No longer just a treat, chocolate has found its way into numerous foods and remains a beloved delicacy.


9. Eye Shadow
Beauty has always been a part of human culture, often expressed through the faces of women. In ancient times, the practice of darkening the eyes and lips was believed to not only make a strong impression but also increase one's authority and repel evil forces.
As early as 4000 BC, Egyptians were using eye shadow and eyebrow pencils. They didn’t have a variety of colors, instead using primarily minerals like galena and some metals to create shades of gray, green, and black. These materials were ground into powder and mixed with soot, applied to the eyes and lips. Over time, these ancient practices evolved into the cosmetic products we use today.


10. Concrete
Modern construction still relies heavily on concrete, but few know that the Romans invented it over 2,000 years ago. They discovered that mixing limestone with volcanic ash created a strong binding mortar, perfect for building materials.
At that time, concrete was used for monumental structures like the Roman Colosseum and the Pantheon without the need for steel reinforcement. What's more remarkable is that the Romans used concrete underwater, building ancient ports and lighthouses. Today, concrete is widely used in virtually all types of construction projects.


