The author organized this article by listing different causes and effects. WHY did the author choose to use this structure? 1. to emphasize the changes in Europe and the Middle East during the Middle Ages
2. to show why different groups and ideas spread during the Middle Ages
3. to explain why the Middle Ages led to the beginning of the Renaissance
4. to describe how life during the Middle Ages was difficult for many people

answer; fair labor and standard act;

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.