The word tribal is an adjective describing the noun tribe. Tribal is synonymous to the word, ethnic, family ancestral etc. Proclivity on the other hand is also synonymous to tendency inclination, or penchant. entails the natural tendency to behave in a particular way. Tribal proclivity from the above entails the act of being inclined to tribal feelings or exhibition of the act of tribalism. In one of the Prophetic traditions, Prophets s.a.w provides an insight as to the concept of tribalism: It was narrated from the daughter of Wathilah bin Al-Asqa' that she heard her father say: I said: 'O Messenger of Allah what is tribalism? He said. When you help your people in wrongdoing (Abu Dawud 2007). The expression tribal proclivity and its effects on the cooperate existence of Nigeria in the centenary era therefore symbolises how the concept of tribalism affects the continuous existence of Nigeria as it attains a hundred years of emergence. The topic is equally viewed from the Islamic point of view. A cursory look at the early history of the territory of the Federal Republic of Nigeria especially from the nineteenth century reveals that this region encompasses a number of independent empires and kingdoms. In addition, each of these enclaves has its own peculiar traditions, customs and institutions. Prominent among the enclaves are the Sokoto caliphate in the North, the Oyo Empire in the South Western region, the Igbo people in the eastern part and the Benin Empire. Borno Empire also existed and is situated in the North eastern part of the present day Nigeria.Furthermore, with passage of time, the British in their bid to secure more colonies, embarked on penetration of these areas of land. Oke (2007) holds that in furtherance of their influence on the present day Nigeria, on the 1st January, 1914, the Northern and Southern part of Nigeria were amalgamated together to form a colony and protectorate called Nigeria. This protectorate was then governed by Fredick Lugard as the first governor of the country. This was also done purposely to ease the act of governance of the two areas in the interest of the British government. Inferentially, the year (2014) marks a centenary in the history of formation of the country Nigeria. Having traverse through a number of distance, it is quite apt to flash back memory with the intent of appraising the past so as to redress the wrongs in the nearest future. Among the pertinent issue that needs to be addressed is the effect of tribalism on the cooperate existence of the Nigerian nation as it attains a hundred years of unification. Bambose (1971), in his submission avows that the country has over 400 to 420 ethnic groups. This however could not be viewed as a factor that could hinder the continual existence of the Country as a Nation. Moreover, there are about 645 distinctive ethnic groups in India and all of them exist under only a country called India.A Flash on the Prevalence of Tribal Proclivity in NigerianOne open truth is that, since the amalgamation of the Northern and Southern protectorate together in 1914, there had been series of exhibition of tribal inclination by Nigerians in their relations among themselves. Coleman (1958) testifies to the prevalence of ethnic prejudice among the three major ethnic groups in Nigeria in the 1940s. Popoola (2014), affirms that the need to foster unity among the various ethnic groups of the nation was one of the conceived idea behind the amalgamation of the country in 1914. The attainment of this he upholds remains a mirage due to a number of tribal conflicts witnessed in the country from time to time. According to Robin (1971), the 1966 coup and counter coup for example, insinuated in the hearth of the people some tribal feelings and ethnic predilection. The coup plotters were mostly from a particular ethnic group of the country (Igbo). In addition, the coup claimed twenty seven lives of which the casualties were mostly from the other ethnic groups of the nation. …