Like a Food chain, so something eats something to grow
<span>"When in rome, do as the romans do" means that a person when in other place new to him, with new culture and new people, he needs to adjust according to the area. He could start learning their language, their culture and tradition in order for him not to be shocked and easily manipulated.</span>
The correct answer is c.: it served as the be boundary between North Korea and South Korea. The current line is in a similar place, but it's not a straight line, unlike the line running along the 39th parallel.
