The third line of defense fights disease by O providing a physical barrier against pathogens.
attacking each pathogen it encounters in the same manner.
O producing a fever to raise the body temperature making it inhabitable to pathogens.
O producing a specific and unique response for each kind of pathogen it encounters.

Africans having pride in their own culture despite being ruled by people of different cultures gave them a sense of self worth.

Explanation:

The people of Africa were ruled by people of different cultures and by the people from different countries. They had a history of colonial rule where they were a colony of many countries.

But despite being ruled by people of different cultures, the people of Africa had pride in their own culture. This gave these people a sense of self worth. The Africans had pride in their own culture, in their own language and their own nation.