When you use a pronoun like "he" or "she," the word should have an antecedent. what does that mean?
the identity of the person should be clear before you use "he" or "she."
you need to identify the person later on.
you need to know whether the words refer to boys or girls.

To meet the needs of commuters in the industrial age, city planners implemented the use of phonographs. provided more horses and carriages. borrowed technology from railroads. constructed new telephone lines.

Read the opening lines of sojourner truth's speech "ain't i a woman? " well, children, where there is so much racket there must be something out of kilter. i think that 'twixt the negroes of the south and the women at the north, all talking about rights, the white men will be in a fix pretty soon. but what's all this here talking about? what tone do these lines convey?

Who is generally considered a postmodern author