Sentence Correction (SC) | For many revisionist historians, Christopher Columbus has come to pers

Ashokshiva pikolo2510

I am not an expert, but let me add my two cents.



That refers to two nouns devastation and enslavement.

I hope you are aware usage of THAT as a relative pronoun modifer.
A relative pronoun will always start a dependent clause. The relative pronoun may
or may not be the subject of the DC that it starts.

The reason why you might be confused is due to presence of prepositional phrase -
in the name of progress - which
...

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