They did this because the goths needed somewhere to stay the Roman Empire offered to help out
        
             
        
        
        
If my memory serves me well, the answer should be: When the Congo River reaches Kinshasa, <span>it flows slowly into the Atlantic. Congo River is the second largest lake in the world. It takes a long way to reach the Atlantic: In the middle it flows towards Matadi and divides into several arms and finally it freely flows into the Atlantic.</span>
        
                    
             
        
        
        
Answer:
During the 1960's the disclosure of enormous gas and oil fields in Alaska accelerated the change of most coal framework to other petroleum products. During this period Usibelli Coal Mine bought the Suntrana mine and the mining activities in the Matanuska coal fields stopped activity.
 
        
             
        
        
        
It is hydropower the first option
        
                    
             
        
        
        
Two questions which arises in my mind about aurora borealis are:
- Why does aurora borealis occur?
 - Why does aurora borealis occur in a particular time of the year?
 
Answers:
- As solar wind approaches the Earth, it meets the Earth's magnetic field. In the ionosphere, the ions of the solar wind collide with atoms of oxygen and nitrogen from the Earth's atmosphere. The energy released during these collisions causes aurora borealis.
 - Aurora borealis is active the whole year. Since it needs to be dark in order to see aurora borealis in the sky, late August/September through the very beginning of April is the best time to go to a destination located in the aurora zone for a chance to see them.
 
Note: These are the questions which arises in my mind only. It may differ from person to person.
Hope you could understand.
If you have any query, feel free to ask.