Answer:Judaism im sure of it
Explanation:
The leader who was in the USA was Jimmy carter. in Britain the prime minister was James Callaghan. However this is because the detente collapsed in 1979 after soviet invasion of Afghanistan.
As per the question however, in the 1980's the USA leader was Reagan and great Britain was Thatcher Margaret.
The main reason why American soldiers used Agent Orange was to eliminate the forrest coverings in Vietnam during the war, in order to eliminate the hiding spots of the enemy.
Answer: the answer will be J ( to claim new territory )
Explanation: my explanation is to find new sea routes which is a territory they wanna claim .