Democracy. Philosophy. Sculpture. Dramatic tragedies. The Olympic Games. Many of the fundamental elements of Western culture first arose more than 2000 years ago in ancient Greece.

The Roman Empire's tentacles stretched from England to Egypt, from Spain to Iraq, and from southern Russia to Morocco. More significantly, ancient Roman civilization thrived for nearly one thousand years. The influence of the Romans over all of those peoples over that span of time defies measure.

Much of Assyria's history is closely tied to its southern neighbor, Babylonia. The two Mesopotamian empires spoke similar languages and worshipped most of the same gods. They were often rivals on the battlefield for influence in the ancient Middle East.

In Athenian democracy, every citizen was required to participate or suffer punishment. This practice stands in stark contrast to modern democratic governments in which citizens can choose whether or not they wish to participate. In Athenian democracy, all citizens pulled their weight.

Huitzilopochtl, God of the Sun, was the Aztec principal god. He had an insatiable appetite for blood. Under his urging, the Aztecs rose from a band of primitive farmers to become the bloodiest civilization of the early Americas. Many Central America cultures indulged in human sacrifice. The Aztec practiced it on an industrial scale, sacrificing tens of thousands of victims each year.

Like many great civilizations, Benin's rise to power was filled with excitement and wonder, but its eventual social crises and political instability displayed the effects of greed, inhumanity, and love of power.

This section discusses the rise and spread of Buddhism and the history of its founder, Siddhartha.

The Maya were a collection of people clustered in city-states. What united them was an idea. For the Maya the world of ordinary living and the Otherworld populated by gods, ancestors, and monstrous things, were equally real. There existed three regions, intricately bound together: the heavens, the earth, and the waters of the Underworld.

If a Hindu person were asked to explain the nature of the caste system, he or she might start to tell the story of Brahma the four-headed, four-handed deity worshipped as the creator of the universe.

In the 1500s, when Spanish conquistadors appeared, two vast empires, those of the Aztecs and the Incas, dominated Central and South America. Both possessed divine kings, both were fractured by internal dissent, and both quickly succumbed to the Spanish onslaught. The physical remains of all these cultures lay dormant for centuries, until science and curiosity demanded their exploration.

In the wake of Columbus' historic voyage in 1492, expeditions, especially from Imperial Spain, swarmed into Aztec territory. They came in search of gold and souls — gold to enrich the coffers of the Spanish king (and their own), and heathen souls to rescue for Christianity. Within a generation, America's ancient civilizations were crushed. Both the Aztec and Inca Empires collapsed after campaigns lasting just a couple of years. How did they fall so fast? Historians suggest many causes.

In the past 25 years archaeologists have learned to read what the Mayas wrote. Today we know the names of kings and queens, how they lived, and when they died, transforming our view of Maya culture.

Although the intricate details of the early Indus Valley culture might never be fully known, many pieces of the ancient puzzle have been discovered. The remains of the Indus Valley cities continue to be unearthed and interpreted today. With each new artifact, the history of early Indian civilization is strengthened and the legacy of this ingenious and diverse metropolis is made richer.

With all the technological innovations coming from modern Japan, it's easy to forget that even they had a Stone Age.

In the ancient Middle East, many great civilizations rose and fell. The religions of Judaism, Christianity, and Islam each trace their origins back to this part of the world. All of these civilizations arose in the area known as the Fertile Crescent. The Fertile Crescent stretches from the Mediterranean Sea in the west to the Zagros Mountains in the east. It is bordered in the north by the Taurus Mountains and in the south by the Persian Gulf and the Arabian Desert. Its shape resembles a crescent moon.

One of the many factors that contributed to the fall of the Roman Empire was the rise of a new religion, Christianity. The Christian religion, which was monotheistic ran counter to the traditional Roman religion, which was polytheistic (many gods). At different times, the Romans persecuted the Christians because of their beliefs, which were popular among the poor.

Being a warrior in feudal Japan was more than just a job. It was a way of life. The collapse of aristocratic rule ushered in a new age of chaos — appropriately called the Warring States period (c.1400-1600) — in which military might dictated who governed and who followed.

People of the Stone Age did not have the luxury of turning on the TV and watching Tim "Rock" Taylor host "Tool Time" or Bob Vilastone giving home-building tips in "This Old Cave." Nor could they dial 911 when a fire threatened them. Rather, they had to invent tools and harness the power of fire. But it was their experiments in tool-making that ultimately led to TV, cell phones, and computers.

In Rome, the gladiatorial contests were held in the Coliseum, a huge stadium that first opened in 80 C.E. Located in the middle of the city, the Coliseum was circular in shape with three levels of arches around the outside. In height, the Coliseum was as tall as a modern 12-story building; it held 50,000 spectators.

The ancient Greeks were polytheistic that is, they worshipped many gods. Their major gods and goddesses lived at the top of Mount Olympus, the highest mountain in Greece, and myths described their lives and actions. In myths, gods often actively intervened in the day-to-day lives of humans. Myths were used to help explain the unknown and sometimes teach a lesson.