The 13th Amendment is to abolish (rid) slavery. I'm not understanding the question as to what the purpose was. Can you be more specific or did you just need to know what it was?
The Tenth Amendment or also referred to as Amendment X in simple terms is "Any power that is not given to the federal government is given to the people or the states." Hope this helps.
The rise and fall of fads will affect the equilibrium price and quantity for example if water was in short supply then the price will more than likely go up. Hope this helps!
To make a PPP adjustment for comparing GDP we build a basket of comparable goods and services and look at the prices of that basket in different countries. Purchasing Power Parity is the exchange rate needed for say $100 to buy the same quantity of products in each country.
