Which of the following statements illustrates a key difference between how the united states gained control of the panama canal and how it gained control of trade rights in japan?
a. the united states only signed a military alliance to secure control of the panama canal.
b. the united states only fought an open war to gain trade rights in japan.
c. the united states only supported rebel groups to secure control of the panama canal.
d. the united states only used the threat of military force to gain trade rights in japan.