Answer:
The prefix is post
Explanation:
To start with, a prefix is a word, number or letter that is placed or added to the beginning of a word in order to make a new word that has a different meaning.
Colonialism is a word that that simply describes the practice which a county exercise control over another country. When the prefix post is added to colonialism as in post-colonialism, the meaning changes to the aftermath of colonialism also known as the period after colonialism.
