How was the practice in Africa and other partas of the world similar to and different from slavery in America ?

I can't give you a direct answer but I can tell some facts about the two.

Explanation:

A lot of people believe that the Americans hunted down the africans and took them from there homes or villages. But in fact that is false there were many colonies in africa that sold their people to others for money and other things. I don't think they were treated any better anywhere in the world because they were considerd slaves; many people thought that weren't really people but property and people can do whatever they please with their own property. That is all I have for at least now let me know if that helped at all. Have a great day.

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.

google it and it will pop up