During the 1800s, which effect did the United States policy of manifest destiny have on U. S. relations with other nations?

a) relations were improved because the policy advanced technology and the benefits of democracy
b) relations were strained because the policy led to a series of confrontations
c) relations were strained because the policy violated the terms of the Monroe doctrine
d) relations were improved because the policy protected Latin America from invasion

:) during the cold war, people were afraid of communists, both outside and inside the united states. the red scare and mccarthyism that grew out of these fears were damaging to the american way of life. during the mccarthy years, many of the freedoms guaranteed in the bill of rights were limited. write a paragraph explaining what lessons can be learned from the mccarthy era about what u.s. citizens need to protect in order to preserve the democratic political system and the american way of life.