In the 20th century, many scientists thought that the ocean floor was flat.  Though we know now that it is not.
        
             
        
        
        
Answer:
Arran is an island off the west coast of Scotland. It is also the largest island!
 
        
             
        
        
        
Answer:
 Various religious and ethnic groups divided based on their believes and practices which they follow in the colonies. Each of the colonies had a different religion like Quakers, Presbyterians, who followed different customs and values. The ethnic groups like Irish, English, and French were different from the religious group. Because they came to start a new life rather than looking for religious freedom. 
Both of the group agreed upon the importance of economic opportunities and liberty of conscience.