The section "a time of change" in the article "the amazing history of shopping in america" uses a compare-and-contrast structure. what is the authoring comparing?

this is what i put and it was correct

it's a way for authors to communicate with reader in this time period. books from the past can teach us about life.

absolutely it most certainly can.

if the italicized words are he ran switfly, we can rewrite the sentence using a verbal phrase as follows:

running swiftly he was able to overtake the child.