The japanese adopted the idea of from otto von bismarck's german empire.

The Japanese adopted the idea of “Realpolitik” from Otto von Bismarck’s German Empire

Explanation:

Realpolitik is the possibility that you do what attempts to achieve your objective disregarding any morals or standards that could act as a burden.

he supported the seperation of church and state. he also promoted religious tolerance.

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)