=Contact with native populations is rarely an even exchange; the native people are usually exploited in some way.
During the early colonialism period, the natives believed that they form a mutually beneficial relationships with the colony, but as it turn out those people only want to control the resources on the land where the natives were resided
I would assume the blank would be "get" or "return."
The statement that has a prepositional phase here is:
Early pilots performed stunts
Explanation:
A prepositional phase is usually found in the beginning of the sentence.
The use of the preposition is to draw out the meaning of a noun or a pronoun with respect to another object in the sentence.
The common examples of such phases include Before, After, By, Under, Over and many other such examples which are there to accentuate a relation thus given.
Here, the use is simple.
The word Early is the prepositional phase which makes the connection between pilots and 'stunts' that is different from the one made by the word 'performed' between them.
