One positive effect of devolution is that it helps maintain a cohesive state. This means that it helps the state remained unified. 
 
        
                    
             
        
        
        
Answer:
Sometimes an entire ocean closes as tectonic plates converge, causing blocks of thick continental crust to collide. A collisional mountain range forms as the crust is compressed, crumpled, and thickened even more. The effect is like a swimmer putting a beach ball under his or her belly—the swimmer will rise up considerably out of the water. The highest mountains on Earth today, the Himalayas, are so high because the full thickness of the Indian subcontinent is shoving beneath Asia.
The Appalachian Mountains formed during a collision of continents 500 to 300 million years ago. In their prime they probably had peaks as high as those in the modern zone of continental collision stretching from the Himalayas in Asia to the Alps in Europe. But over the past 300 million years, the Appalachians have eroded to more modest heights.
Explanation:
carry on learning
and subscribe the sweet poison glmv
have a good day!!!
 
        
             
        
        
        
The most destructive volcano is Mount tambora
        
             
        
        
        
Japan's preferential system of tariffs grants lower or duty-free rates to products imported from developing countries. ... Japan Customs can provide advance rulings on tariff classification and duty rates.
        
             
        
        
        
Answer:
Temperature and pressure
Explanation:
mechanical weathering is the disintegration/breakdown of rocks and this mainly caused the agents of mechanical weathering which are ; water , wind and ice, and this agents of mechanical weathering achieve this due the factors Temperature and pressure.
Temperature : The continuous heating and cooling of rock surfaces cause s wear and tear on the rocks leading to mechanical weathering 
pressure : Ice water found in cracks of rocks exert pressure on the rocks and this also causes the rocks to disintegrate overtime