The two parts of the U.S. congress are the Senate and the House of Representatives. The head of the Senate is the Vice President (but since Vice President has other functions, there is also a leader pro tempore who represents the senate when the Vice President can't. The head of the House of Representatives is its Speaker.
D. Islam spread inside and outside the new Arab Muslim Empire.
http://www.p12.nysed.gov/assessment/ss/hs/framework/ghg2/rubric-prototype-crqs.pdf
Because the Articles of Confederation created a central government that contained only a legislative branch, it does not reflect the principle<span> of "separation of powers".</span>
Answer:
- Change in quantity demanded: Represent a change of total demands of a product that is caused by the price of the product.
When the price of a product increased, the amount of consumers who can afford to buy that product is decreased, As a result, this cause a decrease in overall demand over that product. (The opposite happened when the price of product is decreased)
- a shift in the demand curve. : Represent a change of total demands of a product that is caused by other factors beside the price of the products.
Price is not the only one that can affect demands. For example, natural disaster could occurred and make a certain type of product become really scarce. This tend to lead to an increase of demand even if the price of that product remain the same.
