State factors that led to the abolition of slave trade.
Answer:
-Introduction and use of machines in industries and farms removed the need of slaves.
-Leading economists argued that slaves were less productive than free people.
-Missionaries and other humanitarian groups argued that slavery was inhuman.
-When America attained independence in 1776, Britain turned to Africa for raw materials.
-The French revolution of 1789 spread the ideas of liberty, fraternity and equality.