Final answer:
Pablo Picasso was important during the postwar era because he was an influential artist who played a major role in shaping Modern Art.
Step-by-step explanation:
Pablo Picasso was important during the postwar era because he was an influential artist who played a major role in shaping Modern Art. He was a pioneer of Cubism and Primitivism, two important artistic movements of the time. Picasso's art challenged traditional perspectives and techniques, and his works had a profound influence on other artists, architects, designers, and even philosophers. His art continues to be celebrated and studied today.