Which of the following decisions made by the Ming Dynasty was not related to their efforts to oppose the changes created in China by the Mongol (Yuan) Dynasty? a. The Ming reestablished the civil service examination system and built a large government center in Beijing called the Forbidden City

b. The Ming built and repaired large sections of the Great Wall in order to prevent future invasions

c. The Ming dispatched voyages led by Zheng He to visits areas in the Indian Ocean to project Ming power and gather tribute from other civilizations

d. The Ming promoted Confucian ideals in society and in their government positions