Answer:
The prepositional phrases in the sentence In 1647, the first tax-supported schools were established by law in the United States are:
- In 1647;
- by law;
- in the United States.
Explanation:
Prepositional phrases are those phrases that contain a preposition followed by its object -noun, pronoun, clause or gerund- and any other modifier. These phrases can function as an adjective or as an adverb so as to modify another element in the sentece. The phrases that meet these requirements are in 1647, by law and in the United States.
