Which events led to the end of athens's power and greatest glory? choose all answers that are correct. a. the death of pericles and thousands of others from a plague b. an earthquake that destroyed the parthenon and much of the acropolis c. a ten-year siege and blockade by the assyrian empire d. the defeat of the athenian fleet by sparta

The correct answer is C: labor unions.

Explanation:

Labor unions are organizations that act as representatives of worker rights, and they serve to negotiate for better working conditions and benefits for workers.  

These organizations also took care of the quality of life, educations, skills, and wages of the workers, providing bigger protection than state or federal laws.