I wish I could help but it makes no sense to me :(((
A biography is a nonfiction book about someone's life. Was that your question ?
It symbolizes him looking across looking at her dock.
Answer: the dependence of two or more people or things on each other.
Explanation: (Using context clues) we can see that it explains that he thinks we don't understand that we have to give to be able to take. This shows that we are depending on someone which could be one person or another nation.