Possible Clues:

• From every other part of Africa, cram back into one of its capitals
• Gulf of Guinea hub
• City of gold, according to the Sun
• Capital city of Ghana
• Largest city in Ghana
• Capitals of Algeria, Cameroon, Chad, Rwanda, Angola - and Ghana
• The accountant with a broken-down car in Africa
• Creditor breaking into an accountant's capital
• How capital to give small measure to the Academician!
• Capital small measure to the artist