I believe the answer is: Feedback
in communication, feedback refers to the response that we have after receiving a certain message. For the giver of the message,feedback could be used as some sort of confirmation to ensure that the receiver is not confused about the content of the message.
1>>In the 1800s Europeans occupied Africa
<span>2>>In the 1900s the Aricans liberated their land from such occupations.
hope this helps
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