Food,transportation,and trading
Answer:
It has been 155 years. Slavery was abolished in the year 1865.
B and E. Their culture was changed sometimes involuntarily and They suffered a population decrease.
Ethopia you can see this because that's the only one that is under 50% the other ones are over 50% and the question is in which country do .... make up LESS than half of the total population which half means 50%