It is because of subduction<span>: oceanic crust tends to get colder and denser with age as it spreads off the mid-ocean ridges. It gets so dense, that it sinks in the upper </span><span>mantle </span><span>(subduction). This is like a giant recycling system for oceanic lithosphere! Because continental crust is lighter than oceanic crust, continental crust cannot subduct. We therefore still have some very </span>old continental rocks<span> at the surface of the Earth.</span>
“What led to the outbreak of the bloodiest conflict in the history of North America? A common explanation is that the Civil War was fought over the moral issue of slavery. In fact, it was the economics of slavery and political control of that system that was central to the conflict.” I hope this helps you for what your looking for
Answer:
Japan decided to expand it's empire to obtain resources.
Explanation:
Japan was forced to trade with foreign powers, but didn't have many resources to trade, so Japan was essentially forced to trade things it didn't have. Because of this, Japan was forced to obtain resources. The best way to obtain resources is to invade a neighboring country that does have those resources.
