Just noticed your question with only two hours left to answer. If you have more time to have an answer which will help with a paper or other form of assignment, please re-post it.
Please also add details.
Acuna's found in research were engaged in South America and thus, one is left to assume that is where you are looking.
Also, it would then appear you are asking about specific names of people who have abused and/or exploited territory, natural resources and the people of specific regions - possibly around the Amazon.
Unfortunately neither Acuna I could find to research was Rudolfo.
Please work out more details to your question and re-submit.
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