This isn't hard to answer - A; because Japan had so many small, isolated islands, governing the entire country was often very challengin. Imagine being the emperor or just in charge of a country which was composed of hundreds of islands. For your decree to get into motion on all of them, it needed a lot of time.
Bickering mostly over land claims hope it helps.
San Francisco de los Tejas
They provided freed slaves with places to live as well as education. They also provided food and aid.
