The most common and most likely answer to this crossword clue is the 15 letter word RECONSTRUCTIONS
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Buddy explains!
The straight part
We know that "Portrayals of past events" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case portrayals of past events = reconstructions.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RECONSTRUCTIONS mean?
RECONSTRUCTIONS noun- A thing that has been reconstructed or restored to an earlier state.
- The act of restoring something to an earlier state.
- A result of an attempt to understand in detail how a certain result or event occurred.