I'll tell you the simple stuff, I hope this helps you. For Japan the leader was to be called an emperor or empress who could only be a part of the royal family if they were related to the Shinto sun goddess. As for Europe, the leader was to be called a king or a queen. Like Japan, not just anybody could become royalty. Kings and queens came from a long descent of an Imperial family........
Hello!
The correct answer to your question is: The Oregon Trail.
I really hope my answer helped you! c:
Some of the effects include different culture being introduced to the nation
Also it may teach some people to either be racist / prejudice or kind and accepting
The growing diversity can bring division and could also bring union depending on how current citizens act towards them