OoH this is easy um it’s B
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>
Answer:
After the treaty of Versailles, the Austro Hungarian Empire was divided into The Republic of Austria, the Kingdom of Hungary, Czechoslovakia, the Free State of Fiume and the State of Slovenes, Croats and Serbs (Yugoslavia).
Explanation:
Western European countries were some of the prime sources of immigrants at the time, in particular Ireland due to the lasting consequences of Ireland's Great Famine, aka the potato famine in the mid 1800's.
