Answer:
B. They made it easier to conquer nearby territories
Step-by-step explanation:
The two dynasties Shang and Zhou made advancements in the manufacture and use of bronze instruments like bronze vessels and weapons for wars. So with the use of these war bronze instruments, they were able to conquer territories.
Other improvements by the two dynasties are seen below:
During the regime of the Shang dynasty, they made the following advancements that improved the people of ancient China:
1. Developed writing symbols: Shang dynasty contributed in improving writing symbols which is still used in China today.
2. Improved calendar: Shang dynasty created the Shang calendar which shows 12 months each with 30 days.
3. Military improvement: The Shang warriors used horse-drawn chariots, bronze-tipped speakers amd compound bows to fight.
During the Zhou dynasty, ancient China enjoyed the following improvements:
1. Construction of canals, roads, etc., which are instrumental to trade increase.
2. They developed the writing system even more
3. They brought in the golden age in China
3. The use of iron, crossbows and horseback were introduced.
4. Large scale irrigation were introduced which led to increase in crop yield in North China.