The Mesopotamians were the first civilization to invent the wheel around 3500 BC.

The Great Wall of China was primarily built as a defensive structure to protect the Chinese empire from nomadic invaders.

The concept of zero was first developed by the Indian mathematicians around the 5th century AD.

The ancient Egyptian pyramids were primarily constructed as tombs for pharaohs to ensure their safe passage into the afterlife.

The Chinese were the first to invent the printing press around the 9th century AD, using movable type.

The ancient Roman aqueducts were primarily constructed to supply fresh drinking water to cities and towns.

The Greeks were the first to develop the concept of geometry as a mathematical discipline around the 6th century BC.

The ancient Greek temples were primarily constructed as places of worship and religious ceremonies.

The Chinese were the first to invent the compass around the 2nd century BC, using lodestone.

The ancient Mayan pyramids were primarily constructed as religious temples and ceremonial centers.

The Indians were the first to develop the concept of calculus around the 12th century AD.

The ancient Egyptian hieroglyphs were primarily used for religious texts and inscriptions on monuments.

The Greeks were the first to invent the astrolabe around the 2nd century BC, used for measuring the altitude of celestial bodies.

The ancient Roman roads were primarily constructed for the transportation of goods and military campaigns.

The Babylonians were the first to develop the concept of trigonometry around the 2nd millennium BC.