The answer is booker t. Washington. Hope that helps!
Answer: i think its cultural diffusion
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 largest fear was the position on the slave issue. The pro and anti slavery advocates feared that the addition of California to the Union could cause a senate majority on the other side. The territory was left without a formal government after a debate within the senate and failed the amendments about the addition of California.