For which achievement is the Athenian leader Pericles celebrated? A. He amassed an army of 200,000 soldiers and defeated the Spartans at Thermopylae. B. He ran from Marathon to Athens without stopping to announce the victory over the Persians. C. He rebuilt the shattered city into a great center of art, culture, and learning. D. He sowed the seeds of democracy by establishing a popularly-elected assembly