Texas Subcategories This category has the following 7 subcategories, out of 7 total. Companies of Nigeria by city (4 C) Transport in Nigeria by city (4 C)A Economy of Abuja (1 C, 10 P)I Economy of Ibadan (2 C)K Economy of Kano (1 C, 1 P)L Economy of Lagos (7 C, 5 P)P Economy of Port Harcourt (3 C, 5 P)