2. how did the zhou dynasty come to rule a large part of china? (1 point)
a. by establishing a wide trading network
b. as a result of elections among feudal warlords
c. because no other family sought to rule china
d. through military defeat of the previous rulers

I believe the answer is: D.through military defeat of the previous rulers

At that time, China adopted a system similar to feudalism, in which their territories were divided into smaller area and had their own kings that make the regulation. The leaders in Zhou dynasty managed to take out these leaders one by one, and take up their influence in the territories. They manage to unify a large majority of chinese territories at its peak.

c it says nothing about connecting those 2 seas.