What type of plate boundary is found off the coast of northernmost California, Oregon and Washington State?

The Juan de fuca plate type is called Minor and is slowly submerging under the North American plate

Answerland;

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.