Sienna grabbed her coat and umbrella because the dark sky and looming clouds seemed to promise rain. The word "because" is acting as what type of signal word in the sentence?

hey! what was the rest of the question?

particulars about treasure island, from the beginning to the end, keeping nothing back but the bearings of the island, and that only because there is still treasure not yet lifted, i take up my pen in the year of grace and go back to the time when my father kept th

explanation:

noo because no animal can leave it's mother land and freedom even we can't leave some days in a single room by leaving home it is wrong but needed to protect them