The Japanese justified their imperialism in multiple different ways, depending on what territory is in question.
For China, there was a fake attack on Japanese property, performed by the Japanese themselves, so they invaded Manchuria with the justification that their citizens were in danger.
Korea and Taiwan were justified in the sense that some countries had colonies which they used for resources and as market for their products, so the Japanese justified it in the manner that they also deserve to have such territories.
For some territories they conquered there was no real justification though, and the Japanese didn't really bothered with making excuses anymore.
They started domesticating wheat. This wasn't their main feat however since they also started herding sheep and domesticating goats. These two enabled them to stop moving around like nomads and make a real civilization in the area which resulted in what is now known as history.
Answer:
The sign that says Human Rights.
Explanation:
The Military and Baseball images have nothing to do with racism and the two hands are reaching for each other as if two different races were agreeing on something or are going to do stuff together instead of fighting. The Human Rights sign makes the most sense because there was a lot of segregation and all people deserve the same rights as white people.