What the indirect object in this sentence? " American Indians showed settlers how to plant corn."

Settlers are the indirect object.

Explanation:

an indirect object is a noun or pronoun that occurs in addition to a direct object. The indirect object is always comes after a verb.

it indicates the person or thing that receives what is being given or done

So in the sentence above the people receiving are the settlers.

What they are receiving is learning how to plant corn.

American Indians (direct object)  showed (verb) settlers (indirect objects)

how to plant corn (the thing being given)

hope this helps :-)

"Settlers" is the indirect object.

Explanation:

You can think of the sentence recast in this way -- if it helps:

              S                 V                    DO                       IO

American Indians showed how to plant corn to the settlers.

Direct objects are the primary 'recipients' of the action, while indirect objects are the secondary 'recipients' of the action.

                    IO  DO                            DO     IO

Ex.    I gave you this.     VS.    I gave this to you.

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.