As a Nigerian, why do you always get afraid when you hear separation?

As a Nigerian, why do you always get afraid when you hear separation?

I BELIEVE IN ONE NIGERIA TO THE EXTENT THAT THE INALIENABLE RIGHTS OF THE MINORITY ARE NOT JEOPARDIZED. SEE WHAT I MEAN:

Singapore was once part of Malaysia. Pakistan was once part of India Bangladesh was once part of Pakistan. East Timor was once part of Indonesia. Sudan was once part of Greater Egypt, and Eritrea was once part of Ethiopia. South Sudan was once part of Sudan, Southern Cameroon was once part of Nigeria, Namibia was once part of South Africa, Gambia was once part of Senegambia, Ukraine was once part of USSR