Africa Investment - T-Bills

I'm no finance guru, and if there are any readers that are please chime in, but here is some information you might be interested in.

Nigeria to auction $341M in treasury bills

LAGOS (Reuters) - Nigeria will auction 40.11 billion naira in 91-day and 182-day treasury bills on Wednesday to tame money supply, the central bank said on Tuesday.
The bank said it will issue 5.11 billion naira in 91-day bills and 35 billion naira in the 182-day paper, using the Dutch Auction System.
The results of the auction will be announced on Thursday, the regulator said.
The auction is one of the measures the central bank employs to control money supply, curb inflationary growth and help retail banks manage their liquidity.

Source: Reuters

What nation's flag are these African children displaying in the picture below?