What is the difference between efficiency and effectiveness? what is the best approach to the study of organizational effectiveness?

Being effective looks at doing the right thing, efficiency deals with how you do the right thing.

Explanation:

Effective is being seeing as doing the doing the right thing, while efficiency looks at how well you do that right thing.

The best approach to study organizational effectiveness is to look at goals. Setting a goal and working towards it helps an organization to be effective.

the minoan civilization flourished in the middle bronze age on the island of crete located in the eastern mediterranean from c. 2000 bce until c. 1500 bce. with their unique art and architecture, and the spread of their ideas through contact with other cultures across the aegean, the minoans made a significant contribution to the development of western european civilization as it is known today. labyrinth-like palace complexes, vivid frescoes depicting scenes such as bull-leaping and processions, fine gold jewelry, elegant stone vases, and pottery with vibrant decorations of marine life are all particular features of minoan crete.  

so basically their unique way of ding arts, as well as architecture.