Critically examine the claim that The trans-Atlantic slave trade was based on a pre-existing slavery institution in Africa."2. Critically examine the argument that the Europeans expanded into Africa

Critically examine the claim that  The trans-Atlantic slave trade was based on a pre-existing slavery institution in Africa."

2. Critically examine the argument that the Europeans expanded into Africa in the 19th century for the twin purposes of spreading civilization and ending slavery.

3. Discuss the economic and political motives for European expansion into Africa in the 19th Century

4. To what extent could it be argued that "Colonialism gave birth to the forces that overthrew it."