The Treaty of Paris of 1763 (ended the French and Indian War/Seven Years' War between Great Britain and France, as well as their respective allies.) In the terms of the treaty, France gave up all its territories in mainland North America, effectively ending any foreign military threat to the British colonies there.
Answer:
To help the nation as they want
The Red Scare which was basically another Cold War threat although it never fully escalated.
Risk management.
Hope this helps! :)
