Maybe because they wanted to get something precious or useful or powerful for them
In return from their military services, the Samurai warriors usually received land and food, although it should be noted that often these rewards were not proportional to their service.
Japan is a country that is practice is a democracy. The people are able to express their will freely, so the governing bodies allow them to do so, and occasionally listen to their demands. The Philippines are a developing country that has been putting effort in becoming more democratic. Lately, the government has become more open toward the people, and gradually the people and their ideas gain more attention, though there is still lot to work on. North Korea is one of the most, if not the most closed country in the world. It is a prime example of dictatorship, and the ruler has all the power in the country. The people do not have any right to express themselves, and if they do, especially without a permission, it will end with imprisoning them or even killing them.
