What does the cryptic crossword clue "Disruption of regatta foreseen in historic African zone (15)" mean?

The definition is "historic African zone". The wordplay uses an anagram. anagram of REGATTA FORESEEN = ORANGEFREESTATE The answer is ORANGEFREESTATE.

Disruption of regatta foreseen in historic African zone (15)

Independent Cryptic #11912 | 8 Down | 2024-12-13 flower