The two parts of the continent start to move away from each other
causing rifting of the continental plate, the center or the rift becomes thinner, weaker and starts to sag. The basin area in the middle which has sagged is usually filled up with water, forming a sea. (e.g. the red sea)
The thinner plate in the center then becomes oceanic crust from this, and in the center a new constructive plate boundary is formed. <span>The plates continue to move apart from one another and magma erupts from the constructive/divergent plate boundary, producing new oceanic crust formed mainly of basalt.</span>
The Warring State Period was an era of chaos in ancient history of China. This era is full of warfare. There were bureaucratic and military reforms too. This era is dated as 475 BC to 221 BC. It is also known as era of division. There was a period of peaceful and philosophical Spring and Autumn. then almost all the states were indulged in wars. Then Qin laid the foundation of Qin Dynasty by conquering all the states. Under the Qin Dynasty, China reunited again.
Farmers destroying the soil with tobacco crops. Hope this helps!
