Why did China seem to break up into warring kingdoms so often?

Religion, Morality, and leadership, these waring kingdoms had a lot is common in opposed to vital things for a society such as religion and morals.

  China hasn’t always been just one country. It used to be a lot of smaller kingdoms who wanted to gain control of a big country. And so they fought over it.  China is also REALLY big. When that happens, it’s really hard for a king to keep control, so if one lord wants to start his own army and rebel, it can be hard to stop.

Explanation:    

                      if i'm wrong i apologize

i am confused, what is the question? i can you out if you put it into more depth.

your answer is "graduates" hope this