Vals i think i spelled that wrong
Exploring the ocean is difficult and expensive so many parts of the ocean remain a mystery.
"Why" is the question to ask to help identify the reason for an event that happens in a historical text.
If you ask "why" an event happened, you will get to better understand the reasoning around it, what prompted the event, and some of the personal/political emotions or decisions that surrounded the event.
What poem is this? I can help you if I can read the poem.