What do diary entries tell us about the purpose of the Portola Expedition and Native Americans in California at the time? please help need to finish ASAP

For the purpose of Catholic missions.

Explanation:

Portola Expedition aimed to establish Catholic missions to convert the natives of Alta California to Christianity. Crespí was the only person who traveled with the purpose of land expedition throughout its travels and he became the official diarist for the missionaries. Portolà and Costansó also kept diaries in order to note their experiences and events that occurs during their expedition.

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