In Chapter 4, Jean and John,the American couple arrive at Chief Nanga's house. They represent a changing Africa and changing of tradition. For example, in this chapter, they greet Nanga and his wife by their Christian names, "Hi Micah, hi Margaret..." Odili is shocked at their impudence as he is the same age and a friend of Chief Nanga, yet would never use those personal names. They also represent the presence of another powerful country on top of the existing intrusion of the British and post-colonialism problems. In fact, John proclaims that America is different; they don't just seize power unlike the British. Jean also openly flirts with Nanga. Thus, you have even more foreign influence in a country still trying to define itself!