Extras

Video thumbnail: First Civilizations Episode 4 Preview | Trade

First Civilizations

Episode 4 Preview | Trade

Examine the civilizing effect of trade.

Episode 4 Preview | Trade

Video thumbnail: First Civilizations The Merchant's Seal

First Civilizations

The Merchant's Seal

The merchant’s seal was a guarantee of quality goods.

The Merchant's Seal

Video thumbnail: First Civilizations Rise of International Trade

First Civilizations

Rise of International Trade

Archaeologist Jeff Rose examines the history of a petroglyph in Oman.

Rise of International Trade

Video thumbnail: First Civilizations Indus Valley Civilization

First Civilizations

Indus Valley Civilization

Explore the splendor of the Indus Valley civilization.

Indus Valley Civilization