No surprise here, Nigerians are one of the most active traders dominating the industry.
I think that binance add NGN because Nigeria is open for new technologies and does not make unnecessary problems (good for them) rather than they have dominated the industry. Just loock at NGN/BTC volume. 26 M NGN - that's 75 k $. Its nothing. I know that its first day of trading but its less than noticeable.
Quite early though to start taking trading stats, don't forget we're in an unfavorable market season also it'll require time for the traders to buy into this idea as most of them currently patronizing Localbitcoin in buying of bitcoin with fiat so it'll require some marketing plus time to encourage more traders to be aware of this development and probably buy bitcoin directly from Binance.
i wonder why there is a huge trading volume, is it because there is no trust in the official political system and the economy or is it because of the opportunity and the freedom the market gives.
Both, the political system is corrupt, favoring only selective few while neglecting the masses also the opportunity the industry offers is also a driving force behind the numbers of enthusiast been recorded in the country.