The French “mission civilisatrice”, the Portuguese “missão civilizadora,” and “manifest destiny” all had one thing common, they touted the concept of expansion into territories as what? a land grab
a right of government to take these lands
improving the lives of the indigenous population
an opportunity to enslave indigenous people

Option: improving the lives of the indigenous population  

Explanation:

The French "mission civilisatrice", the Portuguese"missao civilizadora", and the manifest destination had all tried to improve the lives of the indigenous population. The French, Portuguese and the British introduce western ideas into the regions where they saw fit to introduce and spread their control. The civilizing mission is a reason for colonization, meaning to add to the spread of civilization. For the French, plundering their colonies in Algeria, West Africa, and Indochina was mission civilisatrice likewise for Portugal, their territorial possession in Africa was part of missao civilizadora.

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