Answer: US forced the opening of Japan by signing the treaty of Kanagawa, a factor that influenced the acceleration of the disintegration of the feudal system.
Japan only opened its economy to the west after a long Meiji dynasty, in which it took measures for the industrialization and modernization of the country, such as the creation of infrastructure, such as railroads and ports, and the installation of production goods.
They had a civel war and the nationalist side won
Hinduism has survived because of many reasons such as its flexibility, not a standarded structure , how it had been mingled with social life, bakthi and warriors.
I believe postulates are given or assumed true statements without a proof. And a theorem can be proven. You do this in geometry if I remember correctly.
It promised that it was possible to get vast areas of land and become wealthy, however, it was deceptive because people didn't know how much they would have to work on the land and how much physical labor was involved, and many didn't want this type of hard physical labor for themselves.