I think the original sentence is Because he was coming from Alaska, Claude was unaccustomed to Florida’s heat.
- Why is because omitted? What is the name of this action? When do we do this? A good link on this is appreciated.
- Does coming from Alaska implies he is from Alaska that is he was born in Alaska? Or it merely says he had been in Alaska before he came to Florida?
- What is the name of the phrase Coming..., which is telling the reason?