What is a true statement about the open door policy

a) the idea for the policy was opposed by the united states

b) all nations did not want to pay taxes equally

c) all nations should have equal access to ports of trade

d) the idea for the policy came from britain and france

C) all nations should have equal access to ports of trade

The answer is C :

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.