The most common and most likely answer to this crossword clue is the 7 letter word ALGERIA
I've seen this crossword clue in The Sunday Telegraph
A
L
G
E
R
I
A
More clues leading to the result ALGERIA
- Regalia manufactured for African country
- Country musician Kooper I rage about
- Country song about leg getting broken
- Country
- Country show, say, US city rejected
- Land in Africa, having changed regalia
- Country fair e.g. laird might hold back
- Regalia adapted for country on Med
- This African country has aluminium where another has nickel, primarily
- Biggles’s friend not quite getting up-river in Africa
Buddy explains!

The straight part
We know that "Land in Africa" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case land in africa = algeria.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.