The nomads caused invasions that weakened the Zhou dynasty, leading to a violent and tense relationship between the Chinese and nomads.
Invasions lead by the nomads and intrusion within a country would obviously lead to tense relationships if any at all, causing the Zhou dynasty to attempt to block and fight the nomads back, thus the violent relationship.
Hope this helps!
I am pretty sure that it would be a primary source, because the photographer captures and surrounding and the people in the photograph at a particular time.
Answer:
modernization: to begin to use the newest technology or knowledge
restoration: to return something to its original state
annexation: to legally take control of another territory and add it to ones own
method: a way of doing something
protectorate: a country that is defended or protected by another.
