Why are underground homes sometimes used in iceland? a. to prevent snow from collapsing their homes b. to insulate homes from harsh, cold conditions c. to prevent homes from sinking in the permafrost d. to bring down the cost of building in cold climates

Which of the following answer best explains the ideals or principles led to the concept of manifest destiny? a americans wanted the european countries to stay out of the north american continent. b americans felt they had a god-given duty to protect the land of the native americans. c americans thought they had a god-given duty to spread their culture and government. d americans learned about this concept from the native americans tribes had encountered.