An interrelated market shows the relationships between supply and demand of goods that might be substitutes, complements, or derivates.
When the supply or demand of a good affects the supply or demand if another good there is a correlation between these goods. In this case there is a derived demand because the production of lumber has a strong impact in the production of homes.
Another example maybe the change on prices of steel and the production of cars.
The indigenous Aborigines have recently received an apology from the "Australian" government, since years of colonization led to great human abuses against the native people.
