The collapse of Tiwanaku around 1000 seems to have been caused by

In Mesoamerican myths, Tollan is

Agriculture emerged as a way of life in North America after ________ was introduced from Mesoamerica around 1000 B.C.E.

A Sogdian family living in China is credited with introducing the techniques of ___________ to China.

The formal hierarchy of the four major caste groups

On many islands, _____________ began to strain resources after 1100.

The Turks preferred means of obtaining booty was through

Communication between North and South America in this period was hampered by

Scholars have traced the origins of Mesoamerican cultural and political traditions to the ancient _______ civilization.

Of the Polynesian islands, only Fiji