Final answer:
The sect of Buddhism credited with instilling nationalism among the Japanese is Zen Buddhism. This sect within Mahayana Buddhism emphasizes disciplined meditation and influenced Japanese culture and the warrior class.
Step-by-step explanation:
The Buddhist sect that is credited with instilling the idea of nationalism among the Japanese is Zen Buddhism. Zen, or Chan Buddhism, is a tradition within Mahayana Buddhism that emphasizes the practice of meditation and the guidance of a Zen master to achieve enlightenment. It is known for its disciplined and austere practices, which differentiate it from the more popular and devotion-oriented Pure Land Buddhism.
During its history, Japanese Zen has been closely associated with the warrior class and has played a significant role in shaping Japanese culture and national identity. Its emphasis on discipline, self-reliance, and meditation appealed to the samurai ethos and helped to instill a sense of unity and nationalism among the Japanese people.