What Was the International Reaction to England's Abolition of the Slave

What was the international reaction to England's abolition of the slave trade?

A) America abolished the slave trade only after the Civil War in 1965.
B) Spain and Brazil agreed with the British and stopped importing slaves completely at the same time.
C) The African kingdom of Guinea established a national day of celebration when the slave trade was abolished.
D) When many African nations began warring after the abolition, some European colonies had an excuse to establish colonies there.