"In" is a preposition.
·In their exploration
·in their sacrifice
"Of" is a preposition.
·of the world
"To" is a preposition.
·to feel as one
Tell me if you think I missed any.
<span>(of a plant, animal, or person) producing much fruit or foliage or many offspring. or- </span><span>present in large numbers or quantities; plentiful.</span>