Here's why:
* Three main tribes: Nigeria is home to over 250 ethnic groups, but the three largest and most influential are the Hausa, Yoruba, and Igbo.
* Culture, religion, and location: These three tribes have distinct cultural practices, religious affiliations, and geographic regions.
* Muslim Hausa: The Hausa people are predominantly Muslim and are concentrated in the northern region of Nigeria.
* Largest group: While the Yoruba are the most populous tribe, the Hausa are considered the largest in terms of cultural and political influence.
It's important to note that these are broad generalizations. Within each tribe, there is a lot of diversity in terms of culture, religion, and socioeconomic status.