Hello
The correct answer is Isolationism
Becasue isolationism is where a country does not let anyone in or out of its borders and it does not participate in worldly afairs. It also has isolation in the name and the definition of isolation is the process or fact of isolating or being isolated.
Hope this helps
Plz mark me as Brainliest
Answer:
Again give me brainliest and ill give you the answer
Explanation:
They were inexpensive and readily available to large numbers of people
