What was a result of the Zhou capital being destroyed by invaders?
-Leaders of the feudal states declared independence.
-Loyal relatives supported the king to protect the empire.
-Feudal rulers began to use nomadic soldiers in their armies.
-Philosophers gained power by encouraging citizens to rebel

Leaders of the feudal states declared independence.

Explanation:

After the Zhou Capital was destroyed, many leaders saw a fracture in Zhou's government structure and see it as a chance to obtain the power for themselves.

This is why the leaders of the feudal states declared independence.

The lords took control of land which previously owned by Zhou and formed their own army which do not influenced by the Zhou's central government. These separation eventually contributed to Zhou's downfall.

the western roman empire flourished, but the eastern portion of the empire struggled.