Because Slate was more common in wet microclimates.
Hope I Helped :)
<span>North Atlantic Treaty Organization
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There was trails all across The U.S. There was also coming from the other side of the world. lolz. And also walking I guess.
A government is based on a social contract. The people give up some of their natural rights and in return the government guarantees them something. A social contract is an agreement between an authority and the people in which they come to terms on an agreement. Our government like most is based on this kind of agreement.
