Irrigation: Did you mean...?

The Inca civilization flourished in ancient Peru between c. 1400 and 1533 CE. The Inca Empire eventually extended across western South America from Quito in the north to Santiago in the south. It was the largest empire ever seen in the Americas...

The Songhai Empire (aka Songhay, c. 1460 - c. 1591) covered what is today southern Mauritania and Mali. It replaced the Mali Empire (1240-1645) as the most important state in West Africa. Originating as a smaller kingdom along the eastern...

The Zhou Dynasty (1046-256 BCE) was among the most culturally significant of the early Chinese dynasties and the longest lasting of any in China's history, divided into two periods: Western Zhou (1046-771 BCE) and Eastern Zhou (771-256 BCE...

The medieval period of Japan is considered by most historians to stretch from 1185 to 1603 CE. Stand out features of the period include the replacement of the aristocracy by the samurai class as the most powerful social group, the establishment...

Genghis Khan (aka Chinggis Khan) was the founder of the Mongol Empire which he ruled from 1206 until his death in 1227. Born Temujin, he acquired the title of Genghis Khan, likely meaning 'universal ruler’, after unifying the Mongol tribes...

Nineveh (modern-day Mosul, Iraq) was one of the oldest and greatest cities in antiquity. It was originally known as Ninua, a trade center, and would become one of the largest and most affluent cities in antiquity. It was regarded highly by...

Ancient Mesopotamian government was based on the understanding that human beings were created to help and serve the gods. The high priest, king, assembly of elders, governors, and any other officials were recognized as stewards chosen by...

Sargon of Akkad (reign 2334-2279 BCE) was the king of the Akkadian Empire of Mesopotamia, the first multinational empire in history, who united the disparate kingdoms of the region under a central authority. He is equally famous today as...

The Edo period refers to the years from 1603 until 1868 when the Tokugawa family ruled Japan. The era is named after the city of Edo, modern-day Tokyo, where the Tokugawa shogunate had its government. It is also sometimes referred to as the...

Ancient Egyptian culture flourished between c. 6000 BCE with the rise of technology (as evidenced in the glasswork of faience) and 30 BCE with the death of Cleopatra VII, the last Ptolemaic ruler of Egypt. It is famous today for the great...