An ancient civilization is a topic that helps students have a better understanding of the world. ... By understanding the progression, it will improve their understanding of the world and the people who live in it. Ancient civilizations provide insight into why and how history has unfolded and become as it is.
The traders who visit the locations they visited may have converted to the local religion, which then, when they return to their home or along the route, spreading the religion to their family or town.