Which statement best describes the United States' foreign policy in the post-Cold War period? Select one:

a.
The United States was willing to use force to stop the spread of communism.

b.
The United States sought to promote democracy and peace in nations around the world.

c.
The United States used the threat of a nuclear attack to make its enemies follow its policies.

d.
The United States reopened diplomatic and economic ties with Communist nations.