WILL MARK BRAINLIEST! How did Japan try to keep foreign powers at bay? Select all that apply.

reform their political system into a government rather than rule by land-owning families
adapt to the modern world
put China between them and foreign powers as a buffer
shut them out completely
build up a large military to match any foreigners

Why were presidents andrew jackson and martin van buren unwilling to annex texas? a. they did not want texas to be admitted to the union as a slave state. b. they feared that the annexation of texas as a slave state would lead to political problems within the union. c. they thought that texas was too large to be admitted to the union as one state. d. they did not believe in the idea of manifest destiny.