Africa has 54 countries and influenced by many other countries & cultures.
The North of Africa is referred to as the Francophone countries, where French is a widely used language.
The Muslim Religion is the predominant religion and overrides any country culture.
The United Kingdom colonized Kenya and South Africa, and the locals do not get offended by the British cultural gestures
The same applies to Angola and Mozambique as they were Portuguese colonies many years ago.
The Africans place a strong emphasis of respect on the social structure. There still is a strong tribal hierarchy social structure in many countries of Africa.