The most common and most likely answer to this crossword clue is the 7 letter word LIBERIA
I've seen this crossword clue in The Times
L
I
B
E
R
I
A
More clues leading to the result LIBERIA
- Line taken by part of Europe or part of Africa
- Country, capital in Lisbon, part of SW Europe
- Country lake overlooking Spain and Portugal
- Left part of Europe for part of Africa
- Left Western Europe for part of West Africa
- Land held by rising millionaire, bilingual
- The state in which old police chief’s bearing left one
- Country in deceit more fuelled by alcohol, reportedly?
- Country rejecting doctrinaire bilateralism to some extent
- Country tale more influenced by alcohol, audibly?
Buddy explains!

The straight part
We know that "art of West Africa" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case art of west africa = liberia.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.