What was the central platform of james k. polk’s campaign for president?

a. national banking
b. expansion
c. anti- slavery
d. lowering tariffs

B. Expansion

Polk ran on a platform embracing popular commitment to expansion, often referred to as Manifest Destiny.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.

i would say your answer is a)

sorry if im wrong