Sorry I only know this
go to =phrv.
carry on = phrasal verb
to = preposition
to+verb =Infinitive in 3.to speak
Answer:
I think it is one's imagination.
Explanation:
Dickinson throughout this poem describes how even the poorest people can go wherever they want to through books and poetry. In the last two lines, the frugal chariot is our imagination which takes us, the human soul, to lands we dream of.
