Select the three regions explored by columbus.
a. philippine islands
b. coast of north america
c. caribbean islands
d. coast of greenland
e. coast of central america
f. coast of south america

i think it is Caribbean islands, coast of north america, and coast of central america

may i have the answer choices?

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.