The answer is letter C. They created a banking system. This
banking system was one of the ways of modernizing Japan. In the Iwakura
Mission, Japanese that were trying to negotiate in Japan were not able to fully
negotiate with the US because of Japan’s backwardness, because of this economic
industrialization and thus created the banking system of Japan.
The fear that japanese citizens could be spies or sleeper agents
The identity of your own nation and ones own belief