Answer:
The difference in the policy was based on liberalism and expansion.
Step-by-step explanation:
US foreign policy during the isolationist period can be termed as beggar-thy -neighbor policy in that the nation was not seen to care for what was happening outside its boundaries and was mostly engaged in its own affairs.
The policy in the cold war can be termed as liberal imperialism or globalized stance.
They were influencing other nations to open up their markets to free trade and conduct it in terms that were useful for US.
This was one of the landmark methods of the time.
Step-by-step explanation: