Renaissance painters were influenced by a shading technique known as chiaroscuro, first introduced by which of the following?
a byzantine painter
an islamic painter
a greek painter
a spanish painter

The correct answer is A Greek painter

There are evidences that Greak and Roman artists used the chiaroscuro technique. Reviving ancient Greco-Roman culture the idea of humanism was undoubtedly the engine of this movement and became the very spirit of the Renaissance. It is a deliberate return, which proposed the resurrection of the past, now considered as a source of inspiration and model of civilization.  

the event is known to be the soviet union.

they required less loading and unloading

explanation:

the shipping container improved shipping because it cut down on unloading time by three weeks, eliminated wasted space, and allowed ships to carry.