The Great Wall of China

The Great Wall of China is one of the most iconic landmarks in the world. It was built over several dynasties to protect Chinese territories from invasions. The wall stretches thousands of kilometers across mountains, deserts, and plains. Constructed mainly from...

The Printing Press

The printing press, invented by Johannes Gutenberg in the 15th century, revolutionized the spread of information. Before its invention, books were copied by hand, which was slow and expensive. The printing press used movable type, allowing multiple copies of a text to...