Answer:
It is estimated that by the early 16th century as much as 10% of Lisbon's population was of African descent. After the European discovery of the American continent, the demand for African labour gradually grew, as other sources of labour - both European and American - were found to be insufficient.
I'm not sure if you made a typo or not but in the current context I can only see negligible being relevant.
Answer:
Party platform
Explanation: The party platform is the set of ideals a political group will run on and express the will of their consituents.
It cause the natives to change their culture and the world around them
