Masaccio helped pioneer mathematical perspective!
<span>The alliance system is one of the main causes of world war one.</span>
A. The Presentation made recommendations and conclusions.
This is just an educated guess, if the question has more specifications please provide them.
Answer: The answer would be B, b. He produced many ready-mades, or common objects that are transformed into art.
Explanation: this played a major role in this part.
