20. Which of the following is not included in the written constitution of a country? (A) Powers and functions of officers of state
(B) Methods of Taxation of Citizens
(C) Powers and Responsibilities of Parliament
(D) Rights and Responsibilities of citizens

(B) Methods of Taxation of Citizens

Explanation:

The constitution of a country presents a series of principles and general rules that determine the legal, political, and economic system of a country.

Methods of taxation are a very specific form of economic policy, and they are usually specified in a tax code, that follows some principles from the constitution, but that is not included in the constitution itself.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.