Imposed is a verb.
The word 'strictures' can function as a noun. It refers to criticisms, rules, or restrictions imposed on a person or activity.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
A good attention getter for a speech about Cuba is the restrictions imposed on American citizens to travel this tropical Island
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "breezy" is an adjective.