Achaemenid Empire 500 BCE

What is the Oldest Country in the World?

The oldest country in the world is Iran (by date of the earliest known organized government). It was founded in 3200 BCE by the Achaemenid Empire (also called the First Persian Empire). The Achaemenid Empire was a powerful empire that ruled over a large part of the world. The empire was founded by Cyrus the …

Eratosthenes of Cyrene

Eratosthenes of Cyrene – the First Geographer

Eratosthenes of Cyrene (/ˌɛrətɒsˈθiːniːz/; Ancient Greek: Ἐρατοσθένης ὁ Κυρηναῖος, romanized: Eratosthénēs ho Kyrēnaîos; c. 276 BC – c. 194 BC) was a Greek mathematician, the first geographer, and astronomer. He is credited with being the first person to calculate the circumference of the Earth, which he did by applying a measuring system using stadia, a …

Amazon Rainforest

Amazon River: All You Need to Know

What is the Amazon River? The Amazon River is a river in South America that flows from the Andes Mountains to the Atlantic Ocean. It is the longest river in the world and one of the most important rivers in the Amazon rainforest. The Amazon River is home to many different species of animals and …